rebirth vs birth

rebirth and birth both are nouns.

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

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

Other hypernyms of rebirth include nascence, nascency, nativity.

rebirth (noun)	birth (noun)
a spiritual enlightenment causing a person to lead a new life	the event of being born
the revival of learning and culture	a baby born; an offspring
a second or new birth	the process of giving birth
after death the soul begins a new cycle of existence in another human body	the kinship relation of an offspring to the parents
	the time when something begins (especially life)

rebirth (verb)	birth (verb)
	cause to be born