This is a really cool little Internet game that I found. In short, you're given a word, along with 4 other words. You have to look at the word, and figure out which of the 4 best describes that word. It's very challenging. I got many of them right, but trust me, it was simply luck.
The best part of this game is that for each answer you get right, 20 grains of rice are donated through the United Nations to lessen world hunger. How is this possible? As you're playing the game, there are advertisements on the bottom. Those companies participate in this important assistance. So by answering questions on what words mean and sharpening up your brain, you're doing some good too. It's hard to get more awesome than that.