You usually justify the existence of a concept althought it can often take the form that some particular species appears in the ontology. There are real cases when you want to justify entities for example whether a particular state should exist or not. Then you are not just arguing whether it should be understood in the terms of a state or some other organizational principle but what actually happens in the world.
To put it another way, “grounding” is pretty ambiguous between defining a term and justifying the existence of an entity.
I don’t think that’s an accurate characterization of grounding
You usually justify the existence of a concept althought it can often take the form that some particular species appears in the ontology. There are real cases when you want to justify entities for example whether a particular state should exist or not. Then you are not just arguing whether it should be understood in the terms of a state or some other organizational principle but what actually happens in the world.