disappearance vs termination

disappearance and termination both are nouns.

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

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

Other hypernyms of disappearance include conclusion, ending.

disappearance (noun)	termination (noun)
the act of leaving secretly or without explanation	the act of ending something
gradually ceasing to be visible	the end of a word (a suffix or inflectional ending or final morpheme)
the event of passing out of sight	something that results
ceasing to exist	a place where something ends or is complete
	a coming to an end of a contract period