intention vs intentional

intention is a noun but intentional is not a noun.

Word	Noun	Adjective	Verb	Adverb
intention	Yes	No	No	No
intentional	No	Yes	No	No

intention (noun)	intentional (noun)
an act of intending; a volition that you intend to carry out
an anticipated outcome that is intended or that guides your planned actions
(usually plural) the goal with respect to a marriage proposal

intention (adjective)	intentional (adjective)
	done or made or performed with purpose and intent
	characterized by conscious design or purpose