cancellation vs negation

cancellation and negation both are nouns.

Word	Noun	Adjective	Verb	Adverb
cancellation	Yes	No	No	No
negation	Yes	No	No	No

As nouns, negation is a hypernym of cancellation; that is, negation is a word with a broader meaning than cancellation:

cancellation (noun)	negation (noun)
the act of cancelling; calling off some arrangement	the speech act of negating
the speech act of revoking or annulling or making void	a negative statement; a statement that is a refusal or denial of some other statement
	(logic) a proposition that is true if and only if another proposition is false