The word Pantheist refers to the belief that God is everything. That is, everything that exists is part of the God body. God is the Universe, the Earth and all things and the Universe, the Earth and all things are God.
Many Pagan religions are Pantheist in nature, but not all. In the Pagan view, God may be a Goddess. There may be multiple Gods as well, but these are all part of the One God(dess) who is All.