unleavened bread vs bread

unleavened bread and bread both are nouns.

Word	Noun	Adjective	Verb	Adverb
unleavened bread	Yes	No	No	No
bread	Yes	No	Yes	No

As nouns, bread is a hypernym of unleavened bread; that is, bread is a word with a broader meaning than unleavened bread:

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

Other hypernyms of unleavened bread include breadstuff, staff of life.

unleavened bread (noun)	bread (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
	informal terms for money

unleavened bread (verb)	bread (verb)
	cover with bread crumbs