slur vs obliterate

slur is a noun but obliterate is not a noun.

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

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

Other hyponyms of slur include efface.

slur (noun)	obliterate (noun)
a blemish made by dirt
a disparaging remark
(music) a curved line spanning notes that are to be played legato

slur (adjective)	obliterate (adjective)
	reduced to nothingness

slur (verb)	obliterate (verb)
become vague or indistinct	remove completely from recognition or memory
utter indistinctly	make undecipherable or imperceptible by obscuring or concealing
speak disparagingly of; e.g., make a racial slur	mark for deletion, rub off, or erase
play smoothly or legato	do away with completely, without leaving a trace