S: (n) Van Allen belt (a belt of charged particles (resulting from cosmic rays) above the Earth trapped by the Earth's magnetic field)
S: (n) hydrosphere (the watery layer of the earth's surface; includes water vapor)
S: (n) land, dry land, earth, ground, solid ground, terra firma (the solid part of the earth's surface) "the plane turned away from the sea and moved back over land"; "the earth shook for several minutes"; "he dropped the logs on the ground"
W: (adj) globular [Related to: globe] (having the shape of a sphere or ball) "a spherical object"; "nearly orbicular in shape"; "little globular houses like mud-wasp nests"- Zane Grey
W: (adj) global [Related to: globe] (having the shape of a sphere or ball) "a spherical object"; "nearly orbicular in shape"; "little globular houses like mud-wasp nests"- Zane Grey