heathen vs paynim

heathen and paynim both are nouns.

Word	Noun	Adjective	Verb	Adverb
heathen	Yes	Yes	No	No
paynim	Yes	No	No	No

As nouns, paynim is a hyponym of heathen; that is, paynim is a word with a more specific, narrower meaning than heathen:

Other hyponyms of heathen include idol worshiper, idolater, idoliser, idolizer.

heathen (noun)	paynim (noun)
a person who does not acknowledge your god	a heathen; a person who is not a Christian (especially a Muslim)

heathen (adjective)	paynim (adjective)
not acknowledging the God of Christianity and Judaism and Islam