outwear vs wear upon

outwear and wear upon both are verbs.

Word	Noun	Adjective	Verb	Adverb
outwear	No	No	Yes	No
wear upon	No	No	Yes	No

As verbs, outwear and wear upon are synonyms defined as:

outwear and wear upon: exhaust or get tired through overuse or great strain or stress

Other synonyms of outwear include fag, fag out, fatigue, jade, tire, tire out, wear, wear down, wear out, weary.

outwear (verb)	wear upon (verb)
exhaust or get tired through overuse or great strain or stress	exhaust or get tired through overuse or great strain or stress
last longer than others