trespasser vs persona non grata

trespasser and persona non grata both are nouns.

Word	Noun	Adjective	Verb	Adverb
trespasser	Yes	No	No	No
persona non grata	Yes	No	No	No

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

trespasser: someone who intrudes on the privacy or property of another without permission
persona non grata: a person who for some reason is not wanted or welcome

Other hypernyms of trespasser include unwelcome person, entrant.

trespasser (noun)	persona non grata (noun)
someone who intrudes on the privacy or property of another without permission	a person who for some reason is not wanted or welcome
	a diplomat who is unacceptable to the government to which he is sent