forswear vs disown

forswear and disown both are verbs.

Word	Noun	Adjective	Verb	Adverb
forswear	No	No	Yes	No
disown	No	No	Yes	No

As verbs, disown is a hypernym of forswear; that is, disown is a word with a broader meaning than forswear:

forswear: formally reject or disavow a formerly held belief, usually under pressure
disown: cast off

Other hypernyms of forswear include renounce, repudiate.

forswear (verb)	disown (verb)
formally reject or disavow a formerly held belief, usually under pressure	cast off
	prevent deliberately (as by making a will) from inheriting