cereal vs wheat

cereal and wheat both are nouns.

Word	Noun	Adjective	Verb	Adverb
cereal	Yes	Yes	No	No
wheat	Yes	No	No	No

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

cereal: foodstuff prepared from the starchy grains of cereal grasses
wheat: grains of common wheat; sometimes cooked whole or cracked as cereal; usually ground into flour

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

cereal: grass whose starchy grains are used as food: wheat, rice, rye, oats, maize, buckwheat, millet
wheat: annual or biennial grass having erect flower spikes and light brown grains

cereal (noun)	wheat (noun)
a breakfast food prepared from grain	a variable yellow tint; dull yellow, often diluted with white
foodstuff prepared from the starchy grains of cereal grasses	grains of common wheat; sometimes cooked whole or cracked as cereal; usually ground into flour
grass whose starchy grains are used as food: wheat, rice, rye, oats, maize, buckwheat, millet	annual or biennial grass having erect flower spikes and light brown grains

cereal (adjective)	wheat (adjective)
made of grain or relating to grain or the plants that produce it