starches vs spud

starches and spud both are nouns.

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

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

starches: foodstuff rich in natural starch (especially potatoes, rice, bread)
spud: an edible tuber native to South America; a staple food of Ireland

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

starches (noun)	spud (noun)
foodstuff rich in natural starch (especially potatoes, rice, bread)	a sharp hand shovel for digging out roots and weeds
	an edible tuber native to South America; a staple food of Ireland

starches (verb)	spud (verb)
	produce buds, branches, or germinate
	initiate drilling operations, as for petroleum