motivation vs motivational

motivation is a noun but motivational is not a noun.

Word	Noun	Adjective	Verb	Adverb
motivation	Yes	No	No	No
motivational	No	Yes	No	No

motivation (noun)	motivational (noun)
the psychological feature that arouses an organism to action toward a desired goal; the reason for the action; that which gives purpose and direction to behavior
the act of motivating; providing incentive
the condition of being motivated

motivation (adjective)	motivational (adjective)
	of or relating to motivation