Piper nigrum vs white pepper

Piper nigrum and white pepper both are nouns.

Word	Noun	Adjective	Verb	Adverb
Piper nigrum	Yes	No	No	No
white pepper	Yes	No	No	No

As nouns, Piper nigrum and white pepper are synonyms defined as:

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

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

Piper nigrum (noun)	white pepper (noun)
climber having dark red berries (peppercorns) when fully ripe; southern India and Sri Lanka; naturalized in northern Burma and Assam	pepper ground from husked peppercorns
	climber having dark red berries (peppercorns) when fully ripe; southern India and Sri Lanka; naturalized in northern Burma and Assam