going vs departure

going and departure both are nouns.

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

As nouns, going and departure are synonyms defined as:

Other synonyms of going include going away, leaving.

As nouns, going and departure are synonyms defined as:

Other synonyms of going include exit, expiration, loss, passing, release.

going (noun)	departure (noun)
advancing toward a goal	the act of departing
the act of departing	euphemistic expressions for death
euphemistic expressions for death	a variation that deviates from the standard or norm

going (adjective)	departure (adjective)
in full operation