intruder vs intrude

intruder is a noun but intrude is not a noun.

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

intruder (noun)	intrude (noun)
someone who intrudes on the privacy or property of another without permission

intruder (verb)	intrude (verb)
	thrust oneself in as if by force
	enter uninvited
	search or inquire in a meddlesome way
	enter unlawfully on someone's property