sterile vs impotent

sterile and impotent both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sterile	No	Yes	No	No
impotent	No	Yes	No	No

sterile (adjective)	impotent (adjective)
incapable of reproducing	lacking power or ability
free of or using methods to keep free of pathological microorganisms	(of a male) unable to copulate
deficient in originality or creativity; lacking powers of invention