bulghur vs wheat berry

bulghur and wheat berry both are nouns.

Word	Noun	Adjective	Verb	Adverb
bulghur	Yes	No	No	No
wheat berry	Yes	No	No	No

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

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

Other hypernyms of bulghur include wheat.

bulghur (noun)	wheat berry (noun)
parched crushed wheat	grains of common wheat; sometimes cooked whole or cracked as cereal; usually ground into flour
	a grain of wheat