get-go vs outset

get-go and outset both are nouns.

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

As nouns, get-go and outset are synonyms defined as:

Other synonyms of get-go include beginning, commencement, first, kickoff, offset, showtime, start, starting time.

get-go (noun)	outset (noun)
the time at which something is supposed to begin	the time at which something is supposed to begin