pall vs wear down

pall is a noun but wear down is not a noun.

Word	Noun	Adjective	Verb	Adverb
pall	Yes	No	Yes	No
wear down	No	No	Yes	No

pall (noun)	wear down (noun)
hanging cloth used as a blind (especially for a window)
burial garment in which a corpse is wrapped
a sudden numbing dread

pall (verb)	wear down (verb)
lose interest or become bored with something or somebody	exhaust or get tired through overuse or great strain or stress
lose strength or effectiveness; become or appear boring, insipid, or tiresome (to)	deteriorate through use or stress
become less interesting or attractive
lose sparkle or bouquet
cause to become flat
cause surfeit through excess though initially pleasing
cover with a pall
cause to lose courage; to be daunted; to be scared away