Brassica rapa pekinensis vs napa

Brassica rapa pekinensis and napa both are nouns.

Word	Noun	Adjective	Verb	Adverb
Brassica rapa pekinensis	Yes	No	No	No
napa	Yes	No	No	No

As nouns, Brassica rapa pekinensis and napa are synonyms defined as:

Brassica rapa pekinensis and napa: plant with an elongated head of broad stalked leaves resembling celery; used as a vegetable in east Asia

Other synonyms of Brassica rapa pekinensis include celery cabbage, Chinese cabbage, pe-tsai.

Brassica rapa pekinensis (noun)	napa (noun)
plant with an elongated head of broad stalked leaves resembling celery; used as a vegetable in east Asia	plant with an elongated head of broad stalked leaves resembling celery; used as a vegetable in east Asia