degrees celsius is a unit for measuring temperature
kelvin is temperature_unit. thermometer is temperature_measuring_device. temperature_unit is unit_of_measurement. unit_of_temperature is unit_of_measure. mass_measurement_of_temperatures is group_of_measurement_of_temperatures. degree_day is temperature_unit. temperature is measure_of_thermal_energy. measurement_of_temperatures is measuring_event. standard_temperature is degree_centigrade. degree is temperature_unit.