What is the difference between corporate and commercial in a law firm?

"In a law firm corporate and commercial are titles given to two related but usually separate groups. The distinction between the groups can differ across firms. The practice areas within corporate are closely linked and their work relates to the lifecycle of companies, as well as mergers & acquisitions.

Commercial lawyers includes a broader range of practice areas such as franchising, intellectual property and sometimes litigation." source: The Lawyer

Source: https://www.thelawyer.com/difference-between-corporate-commercial-law/