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- Is there a difference between general relativity and gravity?
One obvious difference is that gravity is more general, because there are alternative theories of gravity that differ from general relativity. In this sense general relativity can be thought of as a subset of gravity.
But I am interested in a different type of difference. I am interested in a perspective, if any, in which general relativity can be thought of as more general than gravity. So are there aspects of general relativity that are not aspects of gravity? For instance, could we say that a study of general transformations of spacetime coordinates is a study of general relativity but not necessarily a study of gravity?
But I am interested in a different type of difference. I am interested in a perspective, if any, in which general relativity can be thought of as more general than gravity. So are there aspects of general relativity that are not aspects of gravity? For instance, could we say that a study of general transformations of spacetime coordinates is a study of general relativity but not necessarily a study of gravity?