association vs associational

association is a noun but associational is not a noun.

Word	Noun	Adjective	Verb	Adverb
association	Yes	No	No	No
associational	No	Yes	No	No

association (noun)	associational (noun)
the act of consorting with or joining with others
the process of bringing ideas or events together in memory or imagination
a formal organization of people or groups of people
(ecology) a group of organisms (plants and animals) that live together in a certain geographical region and constitute a community with a few dominant species
(chemistry) any process of combination (especially in solution) that depends on relatively weak chemical bonding
a relation resulting from interaction or dependence
a social or business relationship
the state of being connected together as in memory or imagination

association (adjective)	associational (adjective)
	of or relating to associations or associationism