muffin case vs cookware

muffin case and cookware both are nouns.

Word	Noun	Adjective	Verb	Adverb
muffin case	Yes	No	No	No
cookware	Yes	No	No	No

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

muffin case: a round sheet of paper, foil, or silicone with scallop-pressed edges, giving the muffin a round cup shape.
cookware: a kitchen utensil made of material that does not melt easily; used for cooking

Other hypernyms of muffin case include cooking utensil, cup.

muffin case (noun)	cookware (noun)
a round sheet of paper, foil, or silicone with scallop-pressed edges, giving the muffin a round cup shape.	a kitchen utensil made of material that does not melt easily; used for cooking