A corporation was a type of company.
The 20th century company International Electromatics became INITEC by the 24th century, and still existed in the 30th century. Tobias Vaughn controlled it during all that time. (PROSE: Original Sin)
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)
In 2157, the Earth Alliance of Corporations took control of Earth and its colonies. (PROSE: Lucifer Rising)
The Galatron Mining Corporation tried to obtain Zeiton-7 from Varos at a low price. (TV: Vengeance on Varos)