wear down vs outwear

wear down and outwear both are verbs.

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

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

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

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

wear down (verb)	outwear (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	last longer than others