Celsius and centigrade are essentially the names used simultaneously for the same temperature scale with a slight difference The word centigrade comes from "centi-" for 100 and "grade" for gradients. Hence, the centigrade is divided into degrees based on dividing the temperature between which water freezes and boils into 100 equal gradients or degrees. Whereas, Centigrade was the initially used name instead of Celsius. The zero value here cannot be defined precisely. In this scale,as mentioned earlier, 0 oC is defined as the freezing point and 100 oC is defined as the boiling point of water. Therefore, later in the General Conference of Weights and Measures, the unit was standardized and redefined as the Celsius scale.