penetrator vs intruder

penetrator and intruder both are nouns.

Word	Noun	Adjective	Verb	Adverb
penetrator	Yes	No	No	No
intruder	Yes	No	No	No

As nouns, intruder is a hypernym of penetrator; that is, intruder is a word with a broader meaning than penetrator:

penetrator: an intruder who passes into or through (often by overcoming resistance)
intruder: someone who intrudes on the privacy or property of another without permission

Other hypernyms of penetrator include interloper, trespasser.

penetrator (noun)	intruder (noun)
an intruder who passes into or through (often by overcoming resistance)	someone who intrudes on the privacy or property of another without permission