Parallels of Latitude : The parallels of latitude refer to the angular distance in degrees, minutes and seconds of a point north or south of the Equator. Lines of latitude are often referred to as parallels.

Meridians of Longitude : The meridians of longitude refer to the angular distance, in degrees, minutes and seconds of a point east or west of the Prime (Greenwich) Meridian. Lines of longitude are often referred to as meridians.

North Pole and South Pole.

Equator is the great circle.