outset vs starting time

outset and starting time both are nouns.

Word	Noun	Adjective	Verb	Adverb
outset	Yes	No	No	No
starting time	Yes	No	No	No

As nouns, outset and starting time are synonyms defined as:

outset and starting time: the time at which something is supposed to begin

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

outset (noun)	starting time (noun)
the time at which something is supposed to begin	the time at which something is supposed to begin