blur vs blear

blur is a noun but blear is not a noun.

Word	Noun	Adjective	Verb	Adverb
blur	Yes	No	Yes	No
blear	No	Yes	Yes	No

As verbs, blur and blear are synonyms defined as:

blur (noun)	blear (noun)
a hazy or indistinct representation

blur (adjective)	blear (adjective)
	tired to the point of exhaustion

blur (verb)	blear (verb)
become vague or indistinct	make dim or indistinct
make dim or indistinct
make unclear, indistinct, or blurred
make a smudge on; soil by smudging
to make less distinct or clear
become glassy; lose clear vision