parameter vs parametric

parameter is a noun but parametric is not a noun.

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

parameter (noun)	parametric (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

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