buckwheat vs buckwheat

buckwheat and buckwheat both are nouns.

Word	Noun	Adjective	Verb	Adverb
buckwheat	Yes	No	No	No
buckwheat	Yes	No	No	No

buckwheat (noun)	buckwheat (noun)
grain ground into flour	grain ground into flour
a member of the genus Fagopyrum; annual Asian plant with clusters of small pinkish white flowers and small edible triangular seeds which are used whole or ground into flour	a member of the genus Fagopyrum; annual Asian plant with clusters of small pinkish white flowers and small edible triangular seeds which are used whole or ground into flour