napa vs Chinese cabbage

napa and Chinese cabbage both are nouns.

Word	Noun	Adjective	Verb	Adverb
napa	Yes	No	No	No
Chinese cabbage	Yes	No	No	No

As nouns, napa and Chinese cabbage are synonyms defined as:

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

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

napa (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