wheat germ vs wheat

wheat germ and wheat both are nouns.

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

wheat germ (noun)	wheat (noun)
embryo of the wheat kernel; removed before milling and eaten as a source of vitamins	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