Greek deity vs god

Greek deity and god both are nouns.

Word	Noun	Adjective	Verb	Adverb
Greek deity	Yes	No	No	No
god	Yes	No	No	No

As nouns, god is a hypernym of Greek deity; that is, god is a word with a broader meaning than Greek deity:

Greek deity: a deity worshipped by the ancient Greeks
god: any supernatural being worshipped as controlling some part of the world or some aspect of life or who is the personification of a force

Other hypernyms of Greek deity include deity, divinity, immortal.

Greek deity (noun)	god (noun)
a deity worshipped by the ancient Greeks	a material effigy that is worshipped
	any supernatural being worshipped as controlling some part of the world or some aspect of life or who is the personification of a force
	a man of such superior qualities that he seems like a deity to other people