# ontology

> study of the nature of being, becoming, existence or reality, as well as the basic categories of being and their relations (philosophy)

**Wikidata**: [Q44325](https://www.wikidata.org/wiki/Q44325)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Ontology)  
**Source**: https://4ort.xyz/entity/ontology

## Summary
Ontology is the branch of philosophy that studies the nature of being, becoming, existence, or reality and the basic categories of being and their relations. It is a central topic within metaphysics and is linked to concepts such as categories of being, generalization, mind–body dualism, and specific metaphysical theories like object-oriented ontology.

## Key Facts
- Ontology is defined as the study of the nature of being, becoming, existence or reality, and the basic categories of being and their relations (wikidata_description).
- Ontology is part of metaphysics, a branch of philosophy that deals with the nature, structure, components and fundamental principles of reality (metaphysics; sitelink_count: 140).
- Ontology is part of philosophy, the study of the truths and principles of being, schools of thought, knowledge, or conduct (philosophy; sitelink_count: 312).
- Ontology relates to the philosophical concept "category of being" (category of being; sitelink_count: 39).
- Ontology is connected to the concept of generalization, a form of abstraction that formulates common properties of specific instances as general concepts or claims (generalization; sitelink_count: 44).
- Ontology is associated with mind–body dualism, the philosophical theory that mental phenomena are non-physical and that matter exists independently of mind (mind–body dualism; sitelink_count: 34).
- Ontology links to object-oriented ontology, which is categorized as a metaphysical theory (object-oriented ontology; sitelink_count: 7).
- Ontology is related to the notions of "field of study" (field of study; sitelink_count: 12) and "academic discipline" (academic discipline; sitelink_count: 50).
- Ontology contains or lists philosophy as a subsidiary or related area (Contains / Subsidiaries: philosophy; sitelink_count: 312).
- The Wikidata page for Ontology has sitelink_count: 105 and the wikipedia_title: "Ontology".
- Notable persons related to ontology include Rahel Jaeggi (German professor; sitelink_count: 7), Hans-Georg Gadamer (German philosopher, 1900–2002; sitelink_count: 78), Kazimierz Ajdukiewicz (Polish philosopher and logician, 1890–1963; sitelink_count: 30), Graham Harman (American philosopher, born 1968; sitelink_count: 17), David Wood (British philosopher, born 1946; sitelink_count: 8).
- Additional philosophers related to ontology in the source: Jean-Paul Sartre (French existentialist philosopher, 1905–1980; sitelink_count: 197), Gilles Deleuze (French philosopher, 1925–1995; sitelink_count: 86), Nikolai Berdyaev (Russian philosopher, 1874–1948; sitelink_count: 73), Willard Van Orman Quine (American philosopher and logician, 1900–2000; sitelink_count: 62).
- Other associated figures listed: Yahya al-Shirvani al-Bakubi (15th-century Sufi mystic from Shamakhi who founded the Khalwati order; sitelink_count: 15), Siger of Brabant (Belgian philosopher, c. 1240–1284; sitelink_count: 29), Robert Arp (Philosopher/ontologist/technical writer; sitelink_count: 7).
- Contemporary and additional philosophers connected: Martin Buber (German Jewish Existentialist philosopher and theologian, 1878–1965; sitelink_count: 79), Alain Badiou (French writer and philosopher; sitelink_count: 55), Božidar Knežević (Serbian philosopher and writer; sitelink_count: 6), Marija Selak Raspudić (Croatian philosopher and bioethic researcher; sitelink_count: 5).
- Bernardo Kastrup is listed with birth_date value 1974, occupations: computer scientist and philosopher, citizenship: Kingdom of the Netherlands, and sitelink_count: 8.
- Michel Onfray (French philosopher; sitelink_count: 41) and Slavoj Žižek (Slovenian philosopher, born 1949; sitelink_count: 98) are also connected to ontology.
- The Cardinal Mercier Prize for International Philosophy is listed among related things (Belgian philosophy award; inception: 1975; country: Belgium; sitelink_count: 1).

## FAQs
Q: What is ontology in simple terms?
A: Ontology is the philosophical study of what exists — the nature of being, becoming, existence, and the basic categories that compose reality and their relations.

Q: How does ontology relate to metaphysics and philosophy?
A: Ontology is a part of metaphysics and is embedded within philosophy; metaphysics is the branch of philosophy that deals with the nature and fundamental principles of reality, and ontology focuses specifically on the categories and relations of being.

Q: What themes and concepts are central to ontology?
A: Central themes include categories of being, the relations between kinds of entities, issues of existence and becoming, generalization as an abstraction method, and debates like mind–body dualism and emerging theories such as object-oriented ontology.

Q: Is ontology an academic field or discipline?
A: Yes. Ontology is linked to the ideas of a "field of study" and an "academic discipline" and is addressed by philosophers, scholars, and researchers listed in the related persons.

Q: Who are some notable figures associated with ontology?
A: The source lists numerous figures including Rahel Jaeggi, Hans-Georg Gadamer, Kazimierz Ajdukiewicz, Graham Harman, David Wood, Jean-Paul Sartre, Gilles Deleuze, Nikolai Berdyaev, W. V. O. Quine, Martin Buber, Alain Badiou, and Slavoj Žižek, among others.

Q: Are there named sub-theories or movements tied to ontology?
A: Yes. The source explicitly ties ontology to mind–body dualism and object-oriented ontology as related metaphysical positions or theories.

Q: Where can one see ontology represented in reference databases?
A: Ontology appears on Wikidata and Wikipedia with the wikipedia_title "Ontology", a wikidata_description matching the study of being and a sitelink_count of 105.

## Why It Matters
Ontology underpins how philosophers, theorists, and scholars conceptualize what sorts of things exist and how those things relate. By specifying categories of being and their relations, ontology provides the conceptual scaffolding for metaphysics and many other philosophical inquiries. It shapes debates about the mind and matter (mind–body dualism), informs abstract reasoning methods such as generalization, and gives rise to contemporary metaphysical theories like object-oriented ontology. Because ontology interfaces with the structure of reality itself, it affects how disciplines classify entities, how theories within philosophy are structured, and how thinkers from Sartre to Žižek and contemporary scholars approach fundamental questions about existence. Its linkage to academic disciplines and fields of study makes it a foundational concern for philosophy curricula and scholarly research.

## Notable For
- Being the philosophical study explicitly defined as the investigation into being, becoming, existence, reality, and basic categories of being and their relations (wikidata_description).
- Occupying a central place within metaphysics, the branch of philosophy dealing with the structure and principles of reality (metaphysics; sitelink_count: 140).
- Its direct association with multiple major philosophical themes: category of being, generalization, mind–body dualism, and object-oriented ontology.
- Appearing in major knowledge resources with a substantial presence (Wikidata sitelink_count: 105; Wikipedia title: "Ontology").
- Being connected to a wide range of philosophers across history and contemporary thought, including existentialists, continental thinkers, analytic philosophers, and interdisciplinary contributors such as a computer scientist–philosopher (Bernardo Kastrup).

## Body

### Definition and Core Scope
- Ontology is defined as the study of the nature of being, becoming, existence or reality, and the basic categories of being and their relations.
- Its scope includes identifying kinds of entities, how those kinds are related, and what it means for something to exist or to come into being.

### Relationship to Metaphysics and Philosophy
- Ontology is listed as part of metaphysics. Metaphysics itself is defined as the branch of philosophy that addresses the nature, structure, components and fundamental principles of reality (metaphysics; sitelink_count: 140).
- Ontology is also explicitly part of philosophy, the broader discipline described as the study of truths and principles of being, schools of thought, knowledge, or conduct (philosophy; sitelink_count: 312).
- Philosophy is also listed under Ontology's Contains/Subsidiaries section in the provided data (Contains / Subsidiaries: philosophy; sitelink_count: 312).

### Central Concepts and Related Theories
- Category of being: Ontology directly relates to the "category of being," a philosophical concept concerned with classifications of what exists (category of being; sitelink_count: 39).
- Generalization: Ontology engages with generalization as a form of abstraction that formulates common properties of specific instances into general concepts (generalization; sitelink_count: 44).
- Mind–body dualism: Ontology intersects with debates such as mind–body dualism, which argues mental phenomena are non-physical while matter exists independently of mind (mind–body dualism; sitelink_count: 34).
- Object-oriented ontology: Ontology is connected to object-oriented ontology, denoted as a metaphysical theory focused on objects and their relations (object-oriented ontology; sitelink_count: 7).

### Academic Context and Classification
- Ontology is related to the general terms "field of study" (field of study; sitelink_count: 12) and "academic discipline" (academic discipline; sitelink_count: 50), indicating its role and classification within scholarly systems.
- The entry for Ontology in structured resources carries a sitelink_count of 105 and the wikipedia_title "Ontology", reflecting its documented presence in reference sources.

### Notable People Associated with Ontology
- Rahel Jaeggi — German professor (occupation codes listed); sitelink_count: 7.
- Hans-Georg Gadamer — German philosopher (1900–2002); sitelink_count: 78.
- Kazimierz Ajdukiewicz — Polish philosopher and logician (1890–1963); sitelink_count: 30.
- Graham Harman — American philosopher (born 1968); sitelink_count: 17.
- David Wood — British philosopher, born 1946; sitelink_count: 8.
- Jean-Paul Sartre — French existentialist philosopher (1905–1980); sitelink_count: 197.
- Gilles Deleuze — French philosopher (1925–1995); sitelink_count: 86.
- Nikolai Berdyaev — Russian philosopher (1874–1948); sitelink_count: 73.
- Willard Van Orman Quine — American philosopher and logician (1900–2000); sitelink_count: 62.
- Yahya al-Shirvani al-Bakubi — 15th-century Sufi mystic from Shamakhi who founded the Khalwati order; sitelink_count: 15.
- Siger of Brabant — Belgian philosopher, c. 1240–1284; sitelink_count: 29.
- Robert Arp — Philosopher/ontologist/technical writer; sitelink_count: 7.
- Martin Buber — German Jewish Existentialist philosopher and theologian (1878–1965); sitelink_count: 79.
- Alain Badiou — French writer and philosopher; sitelink_count: 55.
- Božidar Knežević — Serbian philosopher and writer; sitelink_count: 6.
- Marija Selak Raspudić — Croatian philosopher and bioethic researcher; sitelink_count: 5.
- Bernardo Kastrup — Born 1974; occupations listed as computer scientist and philosopher; citizenship: Kingdom of the Netherlands; sitelink_count: 8.
- Michel Onfray — French philosopher; sitelink_count: 41.
- Slavoj Žižek — Slovenian philosopher (born 1949); sitelink_count: 98.
- These individuals span historical periods and nationalities, reflecting ontology’s engagement across diverse philosophical traditions.

### Related Awards and Recognitions
- The Cardinal Mercier Prize for International Philosophy is listed among related items. It is a Belgian philosophy award with inception in 1975 and a sitelink_count of 1.

### Reference and Metadata
- Structured properties provided: sitelink_count: 105; wikipedia_title: "Ontology"; wikidata_description: "study of the nature of being, becoming, existence or reality, as well as the basic categories of being and their relations (philosophy)."
- No SEO data was provided in the source material.

### Summary of Interconnections
- Ontology occupies a central position within metaphysics and philosophy and directly intersects with conceptual tools (generalization), classificatory concerns (categories of being), doctrinal debates (mind–body dualism), and modern metaphysical movements (object-oriented ontology).
- A broad range of philosophers and thinkers, past and present, are identified in connection with ontology, spanning continental and analytic traditions, theology and mysticism, and interdisciplinary figures who combine philosophy with other fields such as computer science.

(End of entry.)

## References

1. Nuovo soggettario
2. Electronic Union Catalogue of Latvian Libraries of National Significance
3. AGROVOC
4. UNESCO Thesaurus
5. Art & Architecture Thesaurus
6. Freebase Data Dumps. 2013
7. [Registros de autoridad de "Materia" de la Biblioteca Nacional de España. Spain open data portal](https://www.bne.es/media/datosgob/catalogo-autoridades/materia/materia-UTF8.zip)
8. Library of Congress Authorities
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12. General Finnish Ontology
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