wear out vs wear upon

wear out and wear upon both are verbs.

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

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

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

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

wear out (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
deteriorate through use or stress
go to pieces