Brassica rapa pekinensis vs Chinese cabbage

Brassica rapa pekinensis and Chinese cabbage both are nouns.

Word	Noun	Adjective	Verb	Adverb
Brassica rapa pekinensis	Yes	No	No	No
Chinese cabbage	Yes	No	No	No

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

Brassica rapa pekinensis and Chinese cabbage: 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, napa, pe-tsai.

Brassica rapa pekinensis (noun)	Chinese cabbage (noun)
plant with an elongated head of broad stalked leaves resembling celery; used as a vegetable in east Asia	elongated head of crisp celery-like stalks and light green leaves
	plant with an elongated head of broad stalked leaves resembling celery; used as a vegetable in east Asia