wear down vs tire

wear down is not a noun while tire is a noun.

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

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

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

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

wear down (noun)	tire (noun)
	hoop that covers a wheel

wear down (verb)	tire (verb)
exhaust or get tired through overuse or great strain or stress	lose interest or become bored with something or somebody
deteriorate through use or stress	exhaust or get tired through overuse or great strain or stress
	cause to be bored
	deplete