rub down vs rasp

rub down is not a noun while rasp is a noun.

Word	Noun	Adjective	Verb	Adverb
rub down	No	No	Yes	No
rasp	Yes	No	Yes	No

As verbs, rasp is a hyponym of rub down; that is, rasp is a word with a more specific, narrower meaning than rub down:

Other hyponyms of rub down include chafe, excoriate.

rub down (noun)	rasp (noun)
	a coarse file with sharp pointed projections
	uttering in an irritated tone

rub down (verb)	rasp (verb)
wear away	utter in a grating voice
manually manipulate (someone's body), usually for medicinal or relaxation purposes	scrape with a rasp