correction vs correctional

correction is a noun but correctional is not a noun.

Word	Noun	Adjective	Verb	Adverb
correction	Yes	No	No	No
correctional	No	Yes	No	No

correction (noun)	correctional (noun)
the act of offering an improvement to replace a mistake; setting right
treatment of a specific defect
the act of disciplining
a drop in stock market activity or stock prices following a period of increases
a rebuke for making a mistake
something substituted for an error
a quantity that is added or subtracted in order to increase the accuracy of a scientific measure

correction (adjective)	correctional (adjective)
	concerned with or providing correction