tell vs require

tell and require both are verbs.

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

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

tell: give instructions to or direct somebody to do something with authority
require: make someone do something

Other hyponyms of tell include direct, instruct, command, call, send for, warn, prescribe.

tell (verb)	require (verb)
discern or comprehend	make someone do something
mark as different	consider obligatory; request and expect
let something be known	have need of
narrate or give a detailed account of	require as useful, just, or proper
give instructions to or direct somebody to do something with authority
give evidence
express in words
inform positively and with certainty and confidence