You're also aware of the context of a work of art now. Interpretations are the conclusions you draw after you apply contextual facts to a particular artwork. It is what you do next with all of the knowledge that you've acquired and brilliant observations you've made. Interpretation is a very personal thing. It's also a profession.
Art historians are professional art interpreters.
They put a tremendous amount of effort into locating, verifying, and accumulating information about the context of a work. Then, with that body of knowledge, they interpret the art image or object. This idea means that they apply the facts to what they see in the picture or sculpture. In some instances there is almost unanimous agreement among art historians because the evidence about a piece of art is so overwhelming and well documented. There are also instances where no two people can agree on even a general interpretation of an artwork because the supporting facts are so weak or contradictory, or they don't exist at all.