Nouns

(n)heathen, pagan, gentile, infidela person who does not acknowledge your god
(n)gentilea person who is not a member of one's own religion; used in this sense by Mormons and Hindus
(n)gentile, non-Jew, goya Christian as contrasted with a Jew
(n)gentilea Christian“Christians refer to themselves as gentiles”

Adjectives

(a)gentilebelonging to or characteristic of non-Jewish peoples