reserved vs backward

reserved and backward both are adjectives.

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

reserved (adjective)	backward (adjective)
marked by self-restraint and reticence	directed or facing toward the back or rear
set aside for the use of a particular person or party	(used of temperament or behavior) marked by a retiring nature
	retarded in intellectual development
	having made less than normal progress

reserved (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