pagan vs heathenish

pagan is a noun but heathenish is not a noun.

Word	Noun	Adjective	Verb	Adverb
pagan	Yes	Yes	No	No
heathenish	No	Yes	No	No

As adjectives, pagan and heathenish are synonyms defined as:

pagan and heathenish: not acknowledging the God of Christianity and Judaism and Islam

Other synonyms of pagan include ethnic, heathen.

pagan (noun)	heathenish (noun)
a person who does not acknowledge your god
a person who follows a polytheistic or pre-Christian religion (not a Christian or Muslim or Jew)
someone motivated by desires for sensual pleasures

pagan (adjective)	heathenish (adjective)
not acknowledging the God of Christianity and Judaism and Islam	not acknowledging the God of Christianity and Judaism and Islam