A.S.A.P. - what, you have a greens emergency???

On top of that, we're not 100% sure we understand your question. Collard greens is a variety of cabbage that doesn’t form a head or heart, but instead grows into a loose bundle of leaves at the top of a tough stalk. The taste is described as being midway between cabbage and kale. Turnip greens, of course, grow at the top of turnips, and are slightly sweet and tender when young, but grow to be tough and strong tasting as they age.

Collard greens, a mainstay of soul food cooking, are traditionally stewed with a bit of bacon, ham, or a ham hock. Turnip greens certainly could be prepared the same way, but can also be cooked in the same manner as spinach or any other leafy green - boiled, steamed, sautéed, stir-fried, etc.