Guinea grains vs melagueta pepper

Guinea grains and melagueta pepper both are nouns.

Word	Noun	Adjective	Verb	Adverb
Guinea grains	Yes	No	No	No
melagueta pepper	Yes	No	No	No

As nouns, Guinea grains and melagueta pepper are synonyms defined as:

Guinea grains and melagueta pepper: West African plant bearing pungent peppery seeds

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

Guinea grains (noun)	melagueta pepper (noun)
West African plant bearing pungent peppery seeds	West African plant bearing pungent peppery seeds