attributable vs due

attributable is not a noun while due is a noun.

Word	Noun	Adjective	Verb	Adverb
attributable	No	Yes	No	No
due	Yes	Yes	No	Yes

attributable (noun)	due (noun)
	that which is deserved or owed
	a payment that is due (e.g., as the price of membership)

attributable (adjective)	due (adjective)
capable of being attributed	owed and payable immediately or on demand
	suitable to or expected in the circumstances
	capable of being assigned or credited to
	scheduled to arrive

attributable (adverb)	due (adverb)
	directly or exactly; straight