ADJ.
all, lexical, reduced
VERB + SYNONYMY
sink
SYNONYMY + NOUN
tachina
PREP.
about, into
noun
A certain degree of similarity between the meaning(s) of several (synonymous) words or phrases. (See Usage notes below.)
A list or collection of synonyms, often compared and contrasted.
The use of synonyms to clarify or explain one's meaning.
The study of synonyms.
A system of synonyms.
noun — the semantic relation that holds between two words that can
sink into synonymy
In 1924 this name was reduced to synonymy.
The synonymy of Tachina is extensive.
It's about synonymy.
Hyponymy, antinomy and synonymy are all lexical terms.