bulgur wheat vs wheat

bulgur wheat and wheat both are nouns.

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

As nouns, wheat is a hypernym of bulgur wheat; that is, wheat is a word with a broader meaning than bulgur wheat:

bulgur wheat: parched crushed wheat
wheat: grains of common wheat; sometimes cooked whole or cracked as cereal; usually ground into flour

Other hypernyms of bulgur wheat include wheat berry.

bulgur wheat (noun)	wheat (noun)
parched crushed wheat	a variable yellow tint; dull yellow, often diluted with white
	grains of common wheat; sometimes cooked whole or cracked as cereal; usually ground into flour
	annual or biennial grass having erect flower spikes and light brown grains