What is the difference between breathing and respiration?

Breathing and respiration are related processes but differ in their function and nature.

Breathing is the physical process of inhaling oxygen and exhaling carbon dioxide through the lungs. It involves the movement of air in and out of the body and does not release energy.

Respiration, on the other hand, is a biochemical process that occurs inside cells. It involves the breakdown of food (glucose) using oxygen to release energy, along with carbon dioxide and water.

In simple terms, breathing supplies oxygen to the body, while respiration uses that oxygen to produce energy.

Thus, breathing is a mechanical process, whereas respiration is a chemical process essential for life.