parametric vs parameter

parametric is not a noun while parameter is a noun.

Word	Noun	Adjective	Verb	Adverb
parametric	No	Yes	No	No
parameter	Yes	No	No	No

parametric (noun)	parameter (noun)
	a constant in the equation of a curve that can be varied to yield a family of similar curves
	a quantity (such as the mean or variance) that characterizes a statistical population and that can be estimated by calculations from sample data
	(computer science) a reference or value that is passed to a function, procedure, subroutine, command, or program
	any factor that defines a system and determines (or limits) its performance

parametric (adjective)	parameter (adjective)
of or relating to or in terms of a parameter