synonymy

From Latin synonymia, from Ancient Greek συνωνυμία (sunōnumía), from σύν (sún, “with”) + ὄνομα (ónoma, “name”).

synonymy (countable and uncountable, plural synonymies)

1. (semantics) The quality of being synonymous; sameness of meaning.

   Antonym: antonymy

2. A list or collection of synonyms, often compared and contrasted.
3. The study of synonyms.

   Synonym: synonymics

4. A system of synonyms.
5. (botany) The collective synonyms (all the names referring to a particular taxon, except the correct name)
6. (botany) The state of not being a correct name, of being a synonym

   In 1924 this name was reduced to synonymy.

7. (zoology) The collective synonyms (all the names referring to the same taxon, including the correct name)

• synonym
• synonymia