let down vs take down

let down and take down both are verbs.

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

As verbs, let down and take down are synonyms defined as:

Other synonyms of let down include bring down, get down, lower.

let down (verb)	take down (verb)
fail to meet the hopes or expectations of	make a written note of
move something or somebody to a lower position	tear down so as to make flat with the ground
	reduce in worth or character, usually verbally
	move something or somebody to a lower position