let down vs come down

let down and come down both are verbs.

Word	Noun	Adjective	Verb	Adverb
let down	No	No	Yes	No
come down	No	No	Yes	No

let down (verb)	come down (verb)
fail to meet the hopes or expectations of	get sick
move something or somebody to a lower position	be the essential element
	criticize or reprimand harshly
	move downward and lower, but not necessarily all the way
	fall from clouds