blossom vs burst forth

blossom is a noun but burst forth is not a noun.

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

As verbs, burst forth is a hyponym of blossom; that is, burst forth is a word with a more specific, narrower meaning than blossom:

Other hyponyms of blossom include effloresce.

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

blossom (verb)	burst forth (verb)
develop or come to a promising stage	be unleashed; emerge with violence or noise
produce or yield flowers	come into or as if into flower
	jump out from a hiding place and surprise (someone)