tell vs aver

tell and aver both are verbs.

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

As verbs, aver is a hypernym of tell; that is, aver is a word with a broader meaning than tell:

Other hypernyms of tell include affirm, assert, avow, swan, swear, verify.

tell (verb)	aver (verb)
discern or comprehend	to declare or affirm solemnly and formally as true
mark as different	report or maintain
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