Guinea pepper vs Xylopia aethiopica

Guinea pepper and Xylopia aethiopica both are nouns.

Word	Noun	Adjective	Verb	Adverb
Guinea pepper	Yes	No	No	No
Xylopia aethiopica	Yes	No	No	No

As nouns, Guinea pepper and Xylopia aethiopica are synonyms defined as:

Guinea pepper and Xylopia aethiopica: tropical west African evergreen tree bearing pungent aromatic seeds used as a condiment and in folk medicine

Other synonyms of Guinea pepper include negro pepper.

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