wear down vs tire out

wear down and tire out both are verbs.

Word	Noun	Adjective	Verb	Adverb
wear down	No	No	Yes	No
tire out	No	No	Yes	No

As verbs, wear down and tire out are synonyms defined as:

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

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

wear down (verb)	tire out (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