gluten bread vs staff of life

gluten bread and staff of life both are nouns.

Word	Noun	Adjective	Verb	Adverb
gluten bread	Yes	No	No	No
staff of life	Yes	No	No	No

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

gluten bread: bread made with gluten flour
staff of life: food made from dough of flour or meal and usually raised with yeast or baking powder and then baked

Other hypernyms of gluten bread include bread, breadstuff.

gluten bread (noun)	staff of life (noun)
bread made with gluten flour	food made from dough of flour or meal and usually raised with yeast or baking powder and then baked