soft wheat vs wheat

soft wheat and wheat both are nouns.

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

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

soft wheat: wheat with soft starch kernels used in pastry and breakfast cereals
wheat: annual or biennial grass having erect flower spikes and light brown grains

soft wheat (noun)	wheat (noun)
wheat with soft starch kernels used in pastry and breakfast cereals	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