avow vs tell

avow and tell both are verbs.

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

As verbs, tell is a hyponym of avow; that is, tell is a word with a more specific, narrower meaning than avow:

Other hyponyms of avow include hold, claim, take, attest, declare, protest, assure.

avow (verb)	tell (verb)
to declare or affirm solemnly and formally as true	discern or comprehend
admit openly and bluntly; make no bones about	mark as different
	let something be known
	narrate or give a detailed account of
	give instructions to or direct somebody to do something with authority
	give evidence
	express in words
	inform positively and with certainty and confidence