simnel vs breadstuff

simnel and breadstuff both are nouns.

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

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

simnel: a crisp bread of fine white flour
breadstuff: food made from dough of flour or meal and usually raised with yeast or baking powder and then baked

Other hypernyms of simnel include bread, staff of life.

simnel (noun)	breadstuff (noun)
a crisp bread of fine white flour	food made from dough of flour or meal and usually raised with yeast or baking powder and then baked
a fruitcake (sometimes covered with almond paste) eaten at mid-Lent or Easter or Christmas	flour or meal or grain used in baking bread