superfluous vs unneeded

superfluous and unneeded both are adjectives.

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

superfluous (adjective)	unneeded (adjective)
more than is needed, desired, or required	not necessary
serving no useful purpose; having no excuse for being