germinate vs sprout

germinate is not a noun while sprout is a noun.

Word	Noun	Adjective	Verb	Adverb
germinate	No	No	Yes	No
sprout	Yes	No	Yes	No

As verbs, germinate and sprout are synonyms defined as:

Other synonyms of germinate include bourgeon, burgeon forth, pullulate, shoot, spud.

germinate (noun)	sprout (noun)
	a newly grown bud (especially from a germinating seed)
	any new growth of a plant such as a new branch or a bud

germinate (verb)	sprout (verb)
produce buds, branches, or germinate	put forth and grow sprouts or shoots
cause to grow or sprout	produce buds, branches, or germinate
work out