Which term describes a thing that you can see or touch?

The term that accurately describes a thing that you can see or touch is "object." In the context of this question, an object refers to a tangible item or entity that has a physical presence, allowing it to be perceived through the senses. This includes anything from a book or a chair to a tree or a car—all of which can be seen and physically interacted with.

Concepts, on the other hand, represent ideas or notions that exist in thought or as mental representations, which do not possess a physical form that can be touched or directly observed. Similarly, an image is a representation of an object, often in visual form such as a photograph or illustration, rather than the object itself. The term entity tends to refer to something that exists in a general sense, which may or may not have physical attributes, and is often used in broader philosophical or scientific discussions.

Thus, "object" stands out as the best answer as it specifically connotes a physical presence that can be seen and touched.