persona non grata vs worker

persona non grata and worker both are nouns.

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

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

Other hypernyms of persona non grata include actor, doer.

persona non grata (noun)	worker (noun)
a person who for some reason is not wanted or welcome	sterile member of a colony of social insects that forages for food and cares for the larvae
a diplomat who is unacceptable to the government to which he is sent	a person who works at a specific occupation
	a member of the working class (not necessarily employed)
	a person who acts and gets things done