Definitions for "Synonymy"
The quality of being synonymous; sameness of meaning.
A figure by which synonymous words are used to amplify a discourse.
the semantic relation that holds between two words that can (in a given context) express the same meaning
Keywords:  taxon, dinosaur, name, species, old
Different species name assigned to an organism that has already been given a species name (a common problem in naming of dinosaur species).
Old names for the same plant.
The relationship between synonymous names, or a list of synonymous names. "Synonym of..." refers to the fact that a taxon is synonymous with another name.
Keywords:  system
A system of synonyms.