bread-stick vs staff of life

bread-stick and staff of life both are nouns.

Word	Noun	Adjective	Verb	Adverb
bread-stick	Yes	No	No	No
staff of life	Yes	No	No	No

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

bread-stick: a crisp stick-shaped roll; often served with soup
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 bread-stick include bread, breadstuff.

bread-stick (noun)	staff of life (noun)
a crisp stick-shaped roll; often served with soup	food made from dough of flour or meal and usually raised with yeast or baking powder and then baked