assure vs tell

assure and tell both are verbs.

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

As verbs, assure and tell are synonyms defined as:

assure (verb)	tell (verb)
be careful or certain to do something; make certain of something	discern or comprehend
inform positively and with certainty and confidence	mark as different
assure somebody of the truth of something with the intention of giving the listener confidence	let something be known
make a promise or commitment	narrate or give a detailed account of
make certain of	give instructions to or direct somebody to do something with authority
	give evidence
	express in words
	inform positively and with certainty and confidence