Imagine you were a hypocrite, for argument's sake. Things you already own, and expect to keep owning, are "personal property". Things you don't own, but expect to one day to be able to take from others by force, are "private property". All other definitions are comically arbitrary and cannot survive the briefest logical scrutiny. A toothbrush can be used to provide services, such as cleaning a rifle receiver or seams in a boot. A car can be a work of art. A tool can be a momento.