Warren Buffett’s Berkshire Hathaway company has made a name-and a fortune-for itself by purchasing and re-stabilizing struggling businesses. Now Berkshire Hathaway has made Russell Corporation a part of its company, but just what does that mean?

“Berkshire Hathaway does not merge with companies, they acquire,” said Lou Marino, a professor in the Culverhouse College of Commerce at the University of Alabama.