boarding vs going

boarding and going both are nouns.

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

As nouns, going is a hypernym of boarding; that is, going is a word with a broader meaning than boarding:

Other hypernyms of boarding include departure, going away, leaving.

boarding (noun)	going (noun)
the act of passengers and crew getting aboard a ship or aircraft	advancing toward a goal
a structure of boards	the act of departing
	euphemistic expressions for death

boarding (adjective)	going (adjective)
	in full operation