obliterate vs modify

obliterate is an adjective but modify is not an adjective.

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

As verbs, modify is a hypernym of obliterate; that is, modify is a word with a broader meaning than obliterate:

Other hypernyms of obliterate include alter, change.

obliterate (adjective)	modify (adjective)
reduced to nothingness

obliterate (verb)	modify (verb)
remove completely from recognition or memory	make less severe or harsh or extreme
make undecipherable or imperceptible by obscuring or concealing	add a modifier to a constituent
mark for deletion, rub off, or erase	cause to change; make different; cause a transformation
do away with completely, without leaving a trace