blossom forth vs blossom

blossom forth is not a noun while blossom is a noun.

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

As verbs, blossom forth and blossom are synonyms defined as:

Other synonyms of blossom forth include blossom out, unfold.

blossom forth (noun)	blossom (noun)
	reproductive organ of angiosperm plants especially one having showy or colorful parts
	the period of greatest prosperity or productivity

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