onion bread vs bread

onion bread and bread both are nouns.

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

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

onion bread: bread containing finely minced onions
bread: food made from dough of flour or meal and usually raised with yeast or baking powder and then baked

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

onion bread (noun)	bread (noun)
bread containing finely minced onions	food made from dough of flour or meal and usually raised with yeast or baking powder and then baked
	informal terms for money

onion bread (verb)	bread (verb)
	cover with bread crumbs