infiltrator vs trespasser

infiltrator and trespasser both are nouns.

Word	Noun	Adjective	Verb	Adverb
infiltrator	Yes	No	No	No
trespasser	Yes	No	No	No

As nouns, trespasser is a hypernym of infiltrator; that is, trespasser is a word with a broader meaning than infiltrator:

infiltrator: an intruder (as troops) with hostile intent
trespasser: someone who intrudes on the privacy or property of another without permission

Other hypernyms of infiltrator include interloper, intruder.

infiltrator (noun)	trespasser (noun)
an intruder (as troops) with hostile intent	someone who intrudes on the privacy or property of another without permission
someone who takes up a position surreptitiously for the purpose of espionage