blossom vs floret

blossom and floret both are nouns.

Word	Noun	Adjective	Verb	Adverb
blossom	Yes	No	Yes	No
floret	Yes	No	No	No

As nouns, floret is a hyponym of blossom; that is, floret is a word with a more specific, narrower meaning than blossom:

blossom: reproductive organ of angiosperm plants especially one having showy or colorful parts
floret: a diminutive flower (especially one that is part of a composite flower)

Other hyponyms of blossom include floweret, apetalous flower, inflorescence, ray floret, ray flower, bud, chrysanthemum.

blossom (noun)	floret (noun)
reproductive organ of angiosperm plants especially one having showy or colorful parts	a diminutive flower (especially one that is part of a composite flower)
the period of greatest prosperity or productivity

blossom (verb)	floret (verb)
develop or come to a promising stage
produce or yield flowers