communication vs communicational

communication is a noun but communicational is not a noun.

Word	Noun	Adjective	Verb	Adverb
communication	Yes	No	No	No
communicational	No	Yes	No	No

communication (noun)	communicational (noun)
something that is communicated by or to or between people or groups
the activity of communicating; the activity of conveying information
a connection allowing access between persons or places

communication (adjective)	communicational (adjective)
	used in communication