My viewpoint is that a handgun’s main purpose is to make repeated scary sounds while I scurry my way to a shotgun. I think the term is “covering fire”.
http://bulletin.accurateshooter.com/2019/11/home-defense-shotgun-vs-pistol-whats-your-best-option/
http://bulletin.accurateshooter.com/2019/11/home-defense-shotgun-vs-pistol-whats-your-best-option/