verify vs avow

verify and avow both are verbs.

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

As verbs, verify and avow are synonyms defined as:

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

verify (verb)	avow (verb)
confirm the truth of	to declare or affirm solemnly and formally as true
to declare or affirm solemnly and formally as true	admit openly and bluntly; make no bones about
attach or append a legal verification to (a pleading or petition)
check or regulate (a scientific experiment) by conducting a parallel experiment or comparing with another standard