disappearance vs going

disappearance and going both are nouns.

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

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

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

disappearance (noun)	going (noun)
the act of leaving secretly or without explanation	advancing toward a goal
gradually ceasing to be visible	the act of departing
the event of passing out of sight	euphemistic expressions for death
ceasing to exist

disappearance (adjective)	going (adjective)
	in full operation