* Place: Earth is a specific location in the universe, with a defined position and boundaries. We can talk about Earth as a "place" where we live, where civilizations exist, and where geographical features like mountains, oceans, and continents are found.

* Thing: Earth is also a physical object, a planet made of rock, water, and atmosphere. It has physical properties like mass, gravity, and a magnetic field. We can study Earth as a "thing" to understand its geology, climate, and biological diversity.

So, depending on the context, you can refer to Earth as either a place or a thing.