Anaerobic exercise does not require the body to use any extra oxygen.

Anaerobic respiration doesn't require the body to use oxygen.

Cellular respiration is a term that describes the biochemical pathway wherein cells release energy and provide the said energy for the important processes of life. Cellular energy can be anaerobic respiration or aerobic respiration.

Aerobic respiration is a process of cell respiration where oxygen is used while anaerobic is a process where organic molecules are used as the last electron acceptors instead of oxygen. In other words, anaerobic respiration is a cellular respiration with no oxygen involved.