matzah vs breadstuff

matzah and breadstuff both are nouns.

Word	Noun	Adjective	Verb	Adverb
matzah	Yes	No	No	No
breadstuff	Yes	No	No	No

As nouns, breadstuff is a hypernym of matzah; that is, breadstuff is a word with a broader meaning than matzah:

matzah: brittle flat bread eaten at Passover
breadstuff: food made from dough of flour or meal and usually raised with yeast or baking powder and then baked

Other hypernyms of matzah include bread, staff of life.

matzah (noun)	breadstuff (noun)
brittle flat bread eaten at Passover	food made from dough of flour or meal and usually raised with yeast or baking powder and then baked
	flour or meal or grain used in baking bread