This is the 4594th most frequent Dutch word.
director
A person who leads or manages an organization, company, or department.
In this sentence, 'directeur' is used to denote the head of a specific institution, in this case, a museum.
De directeur van het museum gaf ons een rondleiding.
The director of the museum gave us a tour.
Here, 'filmregisseur' (in Dutch) refers to someone who directs movies, equivalent to 'director' in English when referring to the film industry.
Hij werkt als filmregisseur in Hollywood.
He works as a film director in Hollywood.
In this example, 'directeur' indicates someone in charge of a company, which in English could be a 'director' or possibly a 'CEO' depending on the context.