Yes you can! You can use nearly any word in the dictionary in your Business name, and even some words out of it. The only time there are restrictions on what you can name your business are when whatever word you are planning to use is copyrighted (In the US at least). Most words won't be copyrighted, but names like Amazon and Oracle are most likely restricted, and names that include common words used in large brands like Apple are most likely heavily monitored and watched for the one slip-up allowing Apple to sue the fake.

Basically, if you think of a cool business name, Look it up on Google. See if someone else is using it or if it's relatively close to another business name. If it's not, you're good to go!