Toponym is a synonym for place name. A place name is the name of a geographical place.
A toponym is a name of a geographical place or a name derived from a name of a place.
I don’t seem to understand this. If you can see, the place name is the name of geographical place. The toponym is a name of geographical place or a name derived from a name of the place. Don’t they mean same? Place name and name of geographical place. Do they have the same meaning or different meaning?