Mentha piperita vs peppermint

Mentha piperita and peppermint both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mentha piperita	Yes	No	No	No
peppermint	Yes	No	No	No

As nouns, Mentha piperita and peppermint are synonyms defined as:

Mentha piperita and peppermint: herb with downy leaves and small purple or white flowers that yields a pungent oil used as a flavoring

Mentha piperita (noun)	peppermint (noun)
herb with downy leaves and small purple or white flowers that yields a pungent oil used as a flavoring	a candy flavored with peppermint oil
	herb with downy leaves and small purple or white flowers that yields a pungent oil used as a flavoring
	red gum tree of Tasmania