penetrate vs penetrative

penetrate is not an adjective while penetrative is an adjective.

Word	Noun	Adjective	Verb	Adverb
penetrate	No	No	Yes	No
penetrative	No	Yes	No	No

penetrate (adjective)	penetrative (adjective)
	having or demonstrating ability to recognize or draw fine distinctions
	tending to penetrate; having the power of entering or piercing

penetrate (verb)	penetrative (verb)
come to understand
become clear or enter one's consciousness or emotions
pass into or through, often by overcoming resistance
insert the penis into the vagina or anus of
spread or diffuse through
make one's way deeper into or through
enter a group or organization in order to spy on the members