graham vs wheat flour

graham and wheat flour both are nouns.

Word	Noun	Adjective	Verb	Adverb
graham	Yes	No	No	No
wheat flour	Yes	No	No	No

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

graham: flour made by grinding the entire wheat berry including the bran; (`whole meal flour' is British usage)
wheat flour: flour prepared from wheat

graham (noun)	wheat flour (noun)
flour made by grinding the entire wheat berry including the bran; (`whole meal flour' is British usage)	flour prepared from wheat