penetrate vs foray

penetrate is not a noun while foray is a noun.

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

As verbs, foray is a hyponym of penetrate; that is, foray is a word with a more specific, narrower meaning than penetrate:

penetrate (noun)	foray (noun)
	a sudden short attack
	an initial attempt (especially outside your usual areas of competence)

penetrate (verb)	foray (verb)
come to understand	briefly enter enemy territory
become clear or enter one's consciousness or emotions	steal goods; take as spoils
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