What Are The Ordinary And Absolute Temperature Scales In The SI And The English Unit System?

What Are The Ordinary And Absolute Temperature Scales In The SI And The English Unit System? The temperature scale in S.I are Celsius (°C) for ordinary temperature and kelvin(K) for absolute temperature while the temperature scale in English system is Fahrenheit (°F) for ordinary temperature and Rankine (R) for absolute temperature. What is the absolute