The word res alone can mean state, and especially res publica means that (or republic). Looking at meanings of res and publicus, this is not the only possible translation of res publica, if no context is given. Is there an example of res publica not referring to the state in classical literature?
For example, it sounds possible to say about different forms of violence within family: Vexatio est res privata, caedes est res publica. "Harassing is a private thing, murder a public thing." I would like to see examples of res publica meaning "public thing" in a way like this. I have been unable to locate any.
This question was inspired by an earlier one about translating res.