discontinuance vs termination

discontinuance and termination both are nouns.

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

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

discontinuance: the act of discontinuing or breaking off; an interruption (temporary or permanent)
termination: the act of ending something

Other hypernyms of discontinuance include conclusion, ending.

discontinuance (noun)	termination (noun)
the act of discontinuing or breaking off; an interruption (temporary or permanent)	the act of ending something
	the end of a word (a suffix or inflectional ending or final morpheme)
	something that results
	a place where something ends or is complete
	a coming to an end of a contract period