exhausting vs wearing

exhausting is not a noun while wearing is a noun.

Word	Noun	Adjective	Verb	Adverb
exhausting	No	Yes	No	No
wearing	Yes	Yes	No	No

As adjectives, exhausting and wearing are synonyms defined as:

Other synonyms of exhausting include tiring, wearying.

exhausting (noun)	wearing (noun)
	the act of having on your person as a covering or adornment
	(geology) the mechanical process of wearing or grinding something down (as by particles washing over it), also figuratively

exhausting (adjective)	wearing (adjective)
having a debilitating effect	producing exhaustion
producing exhaustion