A corporation was a type of company.
In 2107, Eurogen Company and the Butler Institute merged to form Eurogen Butler, generally known as the EB Corporation. Centuries later, after the Cyber-Wars, the EB Corporation changed its name to the Spinward Corporation. (PROSE: Deceit)
The Issigri Mining Company was founded in the early 22nd century. (TV: The Space Pirates) Shortly afterwards, it was renamed the Interplanetary Mining Corporation, or IMC for short. (PROSE: The Menagerie) It still existed in the 26th century. (PROSE: Love and War)