starches vs breadstuff

starches and breadstuff both are nouns.

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

As nouns, breadstuff is a hyponym of starches; that is, breadstuff is a word with a more specific, narrower meaning than starches:

starches: foodstuff rich in natural starch (especially potatoes, rice, bread)
breadstuff: food made from dough of flour or meal and usually raised with yeast or baking powder and then baked

Other hyponyms of starches include bread, staff of life, Irish potato, murphy, potato, spud, tater, white potato, rice.

starches (noun)	breadstuff (noun)
foodstuff rich in natural starch (especially potatoes, rice, bread)	food made from dough of flour or meal and usually raised with yeast or baking powder and then baked
	flour or meal or grain used in baking bread