rebirth vs nativity

rebirth and nativity both are nouns.

Word	Noun	Adjective	Verb	Adverb
rebirth	Yes	No	No	No
nativity	Yes	No	No	No

As nouns, nativity is a hypernym of rebirth; that is, nativity is a word with a broader meaning than rebirth:

Other hypernyms of rebirth include birth, nascence, nascency.

rebirth (noun)	nativity (noun)
a spiritual enlightenment causing a person to lead a new life	the event of being born
the revival of learning and culture
a second or new birth
after death the soul begins a new cycle of existence in another human body