numb vs benumbed

numb and benumbed both are adjectives.

Word	Noun	Adjective	Verb	Adverb
numb	No	Yes	Yes	No
benumbed	No	Yes	No	No

As adjectives, numb and benumbed are synonyms defined as:

Other synonyms of numb include asleep.

numb (adjective)	benumbed (adjective)
so frightened as to be unable to move; stunned or paralyzed with terror; petrified	lacking sensation
lacking sensation	having lost or been caused to lose interest because of overexposure
(followed by `to') not showing human feeling or sensitivity; unresponsive

numb (verb)	benumbed (verb)
make numb or insensitive