Each one has a different word, and on the back, the definition of that word. This way, you can test yourself and see how much you remember.
Flash cards are a wonderful idea.
They surely helped me. I wouldn't be where I am today without them. But I must say, you can get into trouble if you don't watch which words you learn. Be sure to mix up the type of words you are learning. There's nothing worse than being at the video store looking for an entertaining movie and the only words you have studied were golfing terms.