abjure vs renounce

abjure and renounce both are verbs.

Word	Noun	Adjective	Verb	Adverb
abjure	No	No	Yes	No
renounce	No	No	Yes	No

As verbs, renounce is a hypernym of abjure; that is, renounce is a word with a broader meaning than abjure:

abjure: formally reject or disavow a formerly held belief, usually under pressure
renounce: cast off

Other hypernyms of abjure include disown, repudiate.

abjure (verb)	renounce (verb)
formally reject or disavow a formerly held belief, usually under pressure	cast off
	turn away from; give up
	leave (a job, post, or position) voluntarily
	give up, such as power, as of monarchs and emperors, or duties and obligations