Baseball is a popular sport, but sometimes you want to mix up your vocabulary. There are a few great synonyms for base-balls to use in your writing or conversation. One option is "hardball," which is often used to describe the competitive nature of the sport. Another choice is "pill," which refers to the small, white ball used in the game. "Sphere" is another option, as the ball is a three-dimensional object that you throw, catch, and hit. If you want to get playful, you can also use "horsehide" or "laced orb," as these phrases add some flair to your language.