instructional vs instruction

instructional is not a noun while instruction is a noun.

Word	Noun	Adjective	Verb	Adverb
instructional	No	Yes	No	No
instruction	Yes	No	No	No

instructional (noun)	instruction (noun)
	the profession of a teacher
	the activities of educating or instructing; activities that impart knowledge or skill
	(computer science) a line of code written as part of a computer program
	a message describing how something is to be done

instructional (adjective)	instruction (adjective)
of or relating to or used in instruction