In computing, a set of equivalence classes of strings can be considered a thesaurus and the members of each equivalence class are synonyms for each other. See WikiPedia:Thesaurus#Computing.

Generally, a thesaurus is typically used for words and phrases of a NaturalLanguage. For English, the best-known thesaurus is Roget’s Thesaurus. Thesauri have long been used by careful writers.

The following pages provide thesaurus or synonym features:

See also NaturalLanguageMode