Linked from
The 7 pages that link to Napa cabbage, each with the reason it gives.
CabbageBroader topic: This distinct cabbage type developed in East Asian cultivation.
Brassica rapaBroader topic: This leafy crop is one of the species’ best-known forms.
Bok choyRelated: It is another Brassica rapa vegetable common in East Asian cuisine.
Choy sumCompared with: Napa cabbage forms a leafy head, unlike choy sum’s open flowering shoots.
BomdongNarrower topic: Bomdong is a distinctive form of napa cabbage.