Madagascar pepper vs common pepper

Madagascar pepper and common pepper both are nouns.

Word	Noun	Adjective	Verb	Adverb
Madagascar pepper	Yes	No	No	No
common pepper	Yes	No	No	No

As nouns, Madagascar pepper and common pepper are synonyms defined as:

Madagascar pepper and common pepper: climber having dark red berries (peppercorns) when fully ripe; southern India and Sri Lanka; naturalized in northern Burma and Assam

Other synonyms of Madagascar pepper include black pepper, pepper, Piper nigrum, white pepper.

Madagascar pepper (noun)	common pepper (noun)
climber having dark red berries (peppercorns) when fully ripe; southern India and Sri Lanka; naturalized in northern Burma and Assam	climber having dark red berries (peppercorns) when fully ripe; southern India and Sri Lanka; naturalized in northern Burma and Assam