different between hyponymy vs synonymy

English

From hypo- +? -nymy or hyponym +? -y

hyponymy (countable and uncountable, plural hyponymies)

(semantics) The semantic relation between hyponyms; the quality of being hyponymous.
Antonyms: hypernymy, hyperonymy

From Latin synonymia, from Ancient Greek ????????? (sun?numía), from ??? (sún, “with”) + ????? (ónoma, “name”).

synonymy (countable and uncountable, plural synonymies)

(semantics) The quality of being synonymous; sameness of meaning.
Antonym: antonymy
A list or collection of synonyms, often compared and contrasted.
The study of synonyms.
Synonym: synonymics
A system of synonyms.
(botany) The collective synonyms (all the names referring to a particular taxon, except the correct name)
(botany) The state of not being a correct name, of being a synonym
(zoology) The collective synonyms (all the names referring to the same taxon, including the correct name)

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