# substitution cipher

> method of encoding by which units of plaintext are replaced with ciphertext, according to a fixed system; the "units" may be single letters (the most common), pairs of letters, triplets of letters, mixtures of the above, and so forth

**Wikidata**: [Q626500](https://www.wikidata.org/wiki/Q626500)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Substitution_cipher)  
**Source**: https://4ort.xyz/entity/substitution-cipher


## References

1. Freebase Data Dumps. 2013
2. BabelNet