fecundity vs fertile

fecundity is a noun but fertile is not a noun.

Word	Noun	Adjective	Verb	Adverb
fecundity	Yes	No	No	No
fertile	No	Yes	No	No

fecundity (noun)	fertile (noun)
the quality of something that causes or assists healthy growth
the intellectual productivity of a creative imagination
the state of being fertile; capable of producing offspring

fecundity (adjective)	fertile (adjective)
	capable of reproducing
	marked by great fruitfulness
	bearing in abundance especially offspring
	intellectually productive