get-go vs beginning

get-go and beginning both are nouns.

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

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

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

get-go (noun)	beginning (noun)
the time at which something is supposed to begin	the act of starting something
	the first part or section of something
	the event consisting of the start of something
	the place where something begins, where it springs into being
	the time at which something is supposed to begin

get-go (adjective)	beginning (adjective)
	serving to begin