1 : Surface area is a country's total area, including areas under inland bodies of water and some coastal waterways. 2  Irrigated land: The number of square kilometers of land area that is artificially supplied with water. 3  Population density: People per square kilometre, in 1999. 4  At this time the world average was 14.42.
A ground fault is an inadvertent contact between an energized conductor and ground or equipment frame. The return path of the fault current is through the grounding system and any personnel or equipment that becomes part of that system.
Both these faults occur when a line breaks and fall on ground or if its insulation fails and touches the earth. The way I see it if this fault occurs at the generator it can be mentioed as earth fault and if it takes place somewhere in transmission line it is ground fault.