disincentive vs rational motive

disincentive and rational motive both are nouns.

Word	Noun	Adjective	Verb	Adverb
disincentive	Yes	No	No	No
rational motive	Yes	No	No	No

As nouns, rational motive is a hypernym of disincentive; that is, rational motive is a word with a broader meaning than disincentive:

disincentive: a negative motivational influence
rational motive: a motive that can be defended by reasoning or logical argument

disincentive (noun)	rational motive (noun)
a negative motivational influence	a motive that can be defended by reasoning or logical argument