What's the difference between aerobic and anaerobic cellular respiration

Cellular respiration always begins with glycolysis which can occur either in the absence or presence of oxygen and Aerobic denotes the term ‘in the presence of oxygen’ while the word anaerobic denotes the ‘absence of oxygen’. So the respiration which occurs in the presence of oxygen is called as aerobic respiration, on the other hand, respiration occurring in the absence of oxygen is known anaerobic respiration.