receding vs backward

receding is a noun but backward is not a noun.

Word	Noun	Adjective	Verb	Adverb
receding	Yes	Yes	No	No
backward	No	Yes	No	Yes

receding (noun)	backward (noun)
the act of becoming more distant
a slow or gradual disappearance

receding (adjective)	backward (adjective)
(of a hairline e.g.) moving slowly back	directed or facing toward the back or rear
	(used of temperament or behavior) marked by a retiring nature
	retarded in intellectual development
	having made less than normal progress

receding (adverb)	backward (adverb)
	in a manner or order or direction the reverse of normal
	in or to or toward a past time
	at or to or toward the back or rear