posy vs corsage

posy and corsage both are nouns.

Word	Noun	Adjective	Verb	Adverb
posy	Yes	No	No	No
corsage	Yes	No	No	No

As nouns, posy and corsage are synonyms defined as:

posy and corsage: an arrangement of flowers that is usually given as a present

Other synonyms of posy include bouquet, nosegay.

posy (noun)	corsage (noun)
an arrangement of flowers that is usually given as a present	an arrangement of flowers that is usually given as a present