Nominal often implies authority exists in title rather than actual power or involvement. He was only the nominal CEO, the real decisions were made by the board.
Pro Tip 2/3
Less Responsibility
A nominal position usually carries less responsibility than it suggests. As a nominal chairman, she didn't attend daily meetings.
Pro Tip 3/3
Common in Hierarchies
Used for positions in organizations with a hierarchical structure to indicate limited function. He's a nominal director, lacking any real authority in the company.