gridiron vs cookware

gridiron and cookware both are nouns.

Word	Noun	Adjective	Verb	Adverb
gridiron	Yes	No	No	No
cookware	Yes	No	No	No

As nouns, cookware is a hypernym of gridiron; that is, cookware is a word with a broader meaning than gridiron:

gridiron: a cooking utensil of parallel metal bars; used to grill fish or meat
cookware: a kitchen utensil made of material that does not melt easily; used for cooking

Other hypernyms of gridiron include cooking utensil.

gridiron (noun)	cookware (noun)
a cooking utensil of parallel metal bars; used to grill fish or meat	a kitchen utensil made of material that does not melt easily; used for cooking
the playing field on which football is played