wear off vs rub off

wear off and rub off both are verbs.

Word	Noun	Adjective	Verb	Adverb
wear off	No	No	Yes	No
rub off	No	No	Yes	No

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

Other hyponyms of wear off include abrade, abrase, corrade, rub down.

wear off (verb)	rub off (verb)
deteriorate through use or stress	wear away
diminish, as by friction