chafe vs rub down

chafe is a noun but rub down is not a noun.

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

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

Other hypernyms of chafe include abrade, abrase, corrade, rub off.

chafe (noun)	rub down (noun)
anger produced by some annoying irritation
soreness and warmth caused by friction

chafe (verb)	rub down (verb)
warm by rubbing, as with the hands	wear away
tear or wear off the skin or make sore by abrading	manually manipulate (someone's body), usually for medicinal or relaxation purposes
cause friction
cause annoyance in; disturb, especially by minor irritations
feel extreme irritation or anger
become or make sore by or as if by rubbing