napa vs pe-tsai

napa and pe-tsai both are nouns.

Word	Noun	Adjective	Verb	Adverb
napa	Yes	No	No	No
pe-tsai	Yes	No	No	No

As nouns, napa and pe-tsai are synonyms defined as:

napa and pe-tsai: 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, Chinese cabbage.

napa (noun)	pe-tsai (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