going away vs going

going away and going both are nouns.

Word	Noun	Adjective	Verb	Adverb
going away	Yes	No	No	No
going	Yes	Yes	No	No

As nouns, going away and going are synonyms defined as:

Other synonyms of going away include departure, leaving.

going away (noun)	going (noun)
the act of departing	advancing toward a goal
	the act of departing
	euphemistic expressions for death

going away (adjective)	going (adjective)
	in full operation