Guinea pepper vs melagueta pepper

Guinea pepper and melagueta pepper both are nouns.

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

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

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

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

Guinea pepper (noun)	melagueta pepper (noun)
tropical west African evergreen tree bearing pungent aromatic seeds used as a condiment and in folk medicine	West African plant bearing pungent peppery seeds
West African plant bearing pungent peppery seeds