disowning vs repudiation

disowning and repudiation both are nouns.

Word	Noun	Adjective	Verb	Adverb
disowning	Yes	No	No	No
repudiation	Yes	No	No	No

As nouns, repudiation is a hypernym of disowning; that is, repudiation is a word with a broader meaning than disowning:

Other hypernyms of disowning include renunciation.

disowning (noun)	repudiation (noun)
refusal to acknowledge as one's own	the exposure of falseness or pretensions
	rejecting or disowning or disclaiming as invalid
	refusal to acknowledge or pay a debt or honor a contract (especially by public authorities)