fertile vs stiff

fertile is not a noun while stiff is a noun.

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

fertile (noun)	stiff (noun)
	the dead body of a human being
	an ordinary man

fertile (adjective)	stiff (adjective)
capable of reproducing	having a strong physiological or chemical effect
marked by great fruitfulness	rigidly formal
bearing in abundance especially offspring	not moving or operating freely
intellectually productive	very drunk
	marked by firm determination or resolution; not shakable
	strong, vigorous
	incapable of or resistant to bending

fertile (adverb)	stiff (adverb)
	in a stiff manner
	to a great degree