obliteration vs obliterate

obliteration is a noun but obliterate is not a noun.

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

obliteration (noun)	obliterate (noun)
destruction by annihilating something
the complete destruction of every trace of something

obliteration (adjective)	obliterate (adjective)
	reduced to nothingness

obliteration (verb)	obliterate (verb)
	remove completely from recognition or memory
	make undecipherable or imperceptible by obscuring or concealing
	mark for deletion, rub off, or erase
	do away with completely, without leaving a trace