assert vs tell

assert and tell both are verbs.

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

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

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

assert (verb)	tell (verb)
postulate positively and assertively	discern or comprehend
to declare or affirm solemnly and formally as true	mark as different
state categorically	let something be known
insist on having one's opinions and rights recognized	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