Unlike sole proprietorships and partnerships, where the owners are legally the same as their business, corporations offer business owners a unique legal and tax benefit in the sense that corporations are granted their own legal status. Therefore, this business entity type is considered as a separate legal business entity from you, your partners, and your shareholders. If your business were to be sued, it would not put you or your personal assets at any risk. So wait...who are shareholders? Whereas you're an owner / operator / member of your sole proprietorship or partnership, you become a shareholder in a corporation, because this type of business operates with stock, or partial ownership distributed amongst several people. As a shareholder, you "own" a part of the business, but you also have to routinely answer to a board of directors who steer the direction of the company.
The downside to the legal business entity of a corporation is that you have less individual freedom to make executive business decisions, and you are not in total ownership of your business. This business entity type is more difficult to begin and dissolve, and often must comply with a series of complex federal and state regulations and taxes. However, the obvious benefit to this type of legal business entity is that you have more individual legal protection with the separation of yourself from your business in the event of a lawsuit.