Yes, but cabbage needs a longer cooking time.
Purple cabbage, kale, arugula, watercress, endive are the substitute for cabbage.
cabbage
the answer is kale
No, kale is a loose leaf that is from the cabbage family. A leek is a lot like a mild onion.
Yes, you should be able to get away with substituting spinach for arugula, and have it work out okay. However, it does have a bit of a different taste, and may depend on what you are planning to make.
stale kale
kale cole
Colcannon is made up of mashed potatoes, kale, and cabbage; usually white cabbage.
yes there are different varieties of kale. kale is a form of cabbage and one of the oldest varieties that was first grown in Mediterranean and was popular for centuries throughout Europe.
Cabbage, broccoli, kale, and brussels sprouts are a few.
There's salarite; I don't know if there are more.
Yes they are both members of Brassica oleracea or the cabbage family.