blur vs obliterate

blur is a noun but obliterate is not a noun.

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

As verbs, obliterate is a hyponym of blur; that is, obliterate is a word with a more specific, narrower meaning than blur:

Other hyponyms of blur include efface.

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

blur (adjective)	obliterate (adjective)
	reduced to nothingness

blur (verb)	obliterate (verb)
become vague or indistinct	remove completely from recognition or memory
make dim or indistinct	make undecipherable or imperceptible by obscuring or concealing
make unclear, indistinct, or blurred	mark for deletion, rub off, or erase
make a smudge on; soil by smudging	do away with completely, without leaving a trace
to make less distinct or clear
become glassy; lose clear vision