parametric quantity vs constant

parametric quantity and constant both are nouns.

Word	Noun	Adjective	Verb	Adverb
parametric quantity	Yes	No	No	No
constant	Yes	Yes	No	No

As nouns, constant is a hypernym of parametric quantity; that is, constant is a word with a broader meaning than parametric quantity:

parametric quantity: a constant in the equation of a curve that can be varied to yield a family of similar curves
constant: a quantity that does not vary

Other hypernyms of parametric quantity include constant quantity, invariable.

parametric quantity (noun)	constant (noun)
a constant in the equation of a curve that can be varied to yield a family of similar curves	a quantity that does not vary
	a number representing a quantity assumed to have a fixed value in a specified mathematical context

parametric quantity (adjective)	constant (adjective)
	steadfast in purpose or devotion or affection
	uninterrupted in time and indefinitely long continuing
	unvarying in nature