edition has 3 distinct synonyms spread across 1 of its 4 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
the form in which a text (especially a printed book) is published
all of the identical copies of something offered to the public at the same time
“the first edition appeared in 1920”
Synonyms, antonyms and the broader and narrower relations for edition come from Princeton University’s WordNet. Full sources and licences.