bok choy vs Chinese white cabbage

bok choy and Chinese white cabbage both are nouns.

Word	Noun	Adjective	Verb	Adverb
bok choy	Yes	No	No	No
Chinese white cabbage	Yes	No	No	No

As nouns, bok choy and Chinese white cabbage are synonyms defined as:

bok choy and Chinese white cabbage: Asiatic plant grown for its cluster of edible white stalks with dark green leaves

Other synonyms of bok choy include bok choi, Brassica rapa chinensis, pak choi, pakchoi.

bok choy (noun)	Chinese white cabbage (noun)
elongated head of dark green leaves on thick white stalks	Asiatic plant grown for its cluster of edible white stalks with dark green leaves
Asiatic plant grown for its cluster of edible white stalks with dark green leaves