weary vs wear down

weary is an adjective but wear down is not an adjective.

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

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

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

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

weary (adjective)	wear down (adjective)
physically and mentally fatigued

weary (verb)	wear down (verb)
exhaust or get tired through overuse or great strain or stress	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