trespasser vs interloper

trespasser and interloper both are nouns.

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

As nouns, trespasser and interloper are synonyms defined as:

trespasser and interloper: someone who intrudes on the privacy or property of another without permission

Other synonyms of trespasser include intruder.

trespasser (noun)	interloper (noun)
someone who intrudes on the privacy or property of another without permission	someone who intrudes on the privacy or property of another without permission