let down vs baffle

let down is not a noun while baffle is a noun.

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

As verbs, baffle is a hypernym of let down; that is, baffle is a word with a broader meaning than let down:

Other hypernyms of let down include bilk, cross, foil, frustrate, queer, scotch, spoil, thwart.

let down (noun)	baffle (noun)
	a flat plate that controls or directs the flow of fluid or energy

let down (verb)	baffle (verb)
fail to meet the hopes or expectations of	restrain the emission of (sound, fluid, etc.)
move something or somebody to a lower position	be a mystery or bewildering to
	hinder or prevent (the efforts, plans, or desires) of