senseless vs superfluous

senseless and superfluous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
senseless	No	Yes	No	No
superfluous	No	Yes	No	No

As adjectives, senseless and superfluous are synonyms defined as:

senseless and superfluous: serving no useful purpose; having no excuse for being

Other synonyms of senseless include otiose, pointless, purposeless, wasted.

senseless (adjective)	superfluous (adjective)
(of especially persons) lacking sense or understanding or judgment	more than is needed, desired, or required
unresponsive to stimulation	serving no useful purpose; having no excuse for being
not marked by the use of reason
serving no useful purpose; having no excuse for being