nascency vs rebirth

nascency and rebirth both are nouns.

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

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

Other hyponyms of nascency include delivery, live birth, posthumous birth, posthumous birth, reincarnation, renascence.

nascency (noun)	rebirth (noun)
the event of being born	a spiritual enlightenment causing a person to lead a new life
	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