terminus a quo vs get-go

terminus a quo and get-go both are nouns.

Word	Noun	Adjective	Verb	Adverb
terminus a quo	Yes	No	No	No
get-go	Yes	No	No	No

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

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

terminus a quo (noun)	get-go (noun)
earliest limiting point	the time at which something is supposed to begin