grains of paradise vs Guinea grains

grains of paradise and Guinea grains both are nouns.

Word	Noun	Adjective	Verb	Adverb
grains of paradise	Yes	No	No	No
Guinea grains	Yes	No	No	No

As nouns, grains of paradise and Guinea grains are synonyms defined as:

grains of paradise and Guinea grains: West African plant bearing pungent peppery seeds

Other synonyms of grains of paradise include Aframomum melegueta, Guinea pepper, melagueta pepper.

grains of paradise (noun)	Guinea grains (noun)
West African plant bearing pungent peppery seeds	West African plant bearing pungent peppery seeds