bring down vs let down

bring down and let down both are verbs.

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

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

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

bring down (verb)	let down (verb)
cut down on; make a reduction in	fail to meet the hopes or expectations of
impose something unpleasant	move something or somebody to a lower position
cause to be enthusiastic
cause to come to the ground
move something or somebody to a lower position
cause the downfall of; of rulers