wheat vs wheat berry

wheat and wheat berry both are nouns.

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

As nouns, wheat and wheat berry are synonyms defined as:

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

wheat (noun)	wheat berry (noun)
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
grains of common wheat; sometimes cooked whole or cracked as cereal; usually ground into flour	a grain of wheat
annual or biennial grass having erect flower spikes and light brown grains