instruction vs instructional

instruction is a noun but instructional is not a noun.

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

instruction (noun)	instructional (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

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