germinal vs germ

germinal is not a noun while germ is a noun.

Word	Noun	Adjective	Verb	Adverb
germinal	No	Yes	No	No
germ	Yes	No	No	No

germinal (noun)	germ (noun)
	a minute life form (especially a disease-causing bacterium); the term is not in technical use
	a small apparently simple structure (as a fertilized egg) from which new tissue can develop into a complete organism
	anything that provides inspiration for later work

germinal (adjective)	germ (adjective)
containing seeds of later development