As I understand it, Head is what you call someone that's leading a group of people and they don't have the on-paper experience to do it, or you don't want to give them the title for any other reason. Also why startups tend to have more "heads" of things and at some point shift to having VPs
This aligns with my experience. I used to work at a department that had a "Head". She never talked to anybody or delivered any tangible work. I still wonder what her real job was.
