be born vs birth

be born is not a noun while birth is a noun.

Word	Noun	Adjective	Verb	Adverb
be born	No	No	Yes	No
birth	Yes	No	Yes	No

be born (noun)	birth (noun)
	the event of being born
	a baby born; an offspring
	the process of giving birth
	the kinship relation of an offspring to the parents
	the time when something begins (especially life)

be born (verb)	birth (verb)
come into existence through birth	cause to be born