birth vs get-go

birth and get-go both are nouns.

Word	Noun	Adjective	Verb	Adverb
birth	Yes	No	Yes	No
get-go	Yes	No	No	No

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

Other hypernyms of birth include beginning, commencement, first, kickoff, offset, outset, showtime, start, starting time.

birth (noun)	get-go (noun)
the event of being born	the time at which something is supposed to begin
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)

birth (verb)	get-go (verb)
cause to be born