penetrate vs infix

penetrate is not a noun while infix is a noun.

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

As verbs, infix is a hypernym of penetrate; that is, infix is a word with a broader meaning than penetrate:

Other hypernyms of penetrate include enter, insert, introduce.

penetrate (noun)	infix (noun)
	an affix that is inserted inside the word

penetrate (verb)	infix (verb)
come to understand	attach a morpheme into a stem word
become clear or enter one's consciousness or emotions	put or introduce into something
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