If you leave home, you stop living in your parents’ home.
leave the house or leave home? verifies this usage.
whereas, go to work at a specific time uses "leave home" this way
Unless there is further context, "go to work at 8" would normally mean the time when you leave home.
I understand the meanings of all the sentences above clearly, I would just like to know if the usage of "leave home" varies in different areas. For example, in some area, "leave home" only means "stop living in parents’ home" while in some other area "leave home" could also mean "go out of house for something".
Is my understanding right? If yes, what are those areas?