avow vs affirm

avow and affirm both are verbs.

Word	Noun	Adjective	Verb	Adverb
avow	No	No	Yes	No
affirm	No	No	Yes	No

As verbs, avow and affirm are synonyms defined as:

Other synonyms of avow include assert, aver, swan, swear, verify.

avow (verb)	affirm (verb)
to declare or affirm solemnly and formally as true	establish or strengthen as with new evidence or facts
admit openly and bluntly; make no bones about	to declare or affirm solemnly and formally as true
	say yes to