Turnips are one type of brassica. Rape, broccoli, brussels sprouts, rutabaga, cauliflower, mustard, collard greens, kohlrabi, canola and kale are all members of the brassica family (probably some more that I currently forget too)
Yes and many more that I don't know the names of, that go loosely by the category name of chinese cabbage. There are likely thousands of varieties of them. The term covers a lot lf ground. No pun intended. "D"
Give back twice that which you take.