Gangue. The dross matter in ore.
Gallopade. A brisk German dance in rapid measure.
Geologist. One who studies the structure of the earth.
Genial. A pleasant disposition.
Gravity. The attraction of mass for mass.
Guttural. A sound issuing forth from the lower part of the throat.
Guardian. An individual appointed to care for the person of a minor.
Harassment. To cause difficulties, troubles or worries.
Hemisphere. One half of a globe.