Breathing is the biological process of inhaling and exhaling of the gases between the cells and the environment. The mechanism of breathing involves various respiratory structures such as the windpipe, lungs and nose.
Respiration, on the other hand, is a chemical process that takes place in the cell. The air that we inhale brings oxygen to the lungs and is carried by the blood to the cells, where it helps in the breakdown of glucose which results in the generation of energy. This energy is used by the cells to carry out their respective functions.

Breathing and Respiration are two distinct processes that are essential for the survival of living beings. Although these terms are often used interchangeably, they have different meanings, functions, and mechanisms.

Breathing:
Breathing refers to the physical act of inhaling and exhaling air through the lungs. It is a mechanical process that involves the movement of air in and out of the body. The process of breathing is controlled by the respiratory system, which includes the diaphragm, intercostal muscles, and the respiratory center in the brainstem.

Respiration:
Respiration, on the other hand, refers to the biochemical process of generating energy from glucose and oxygen. It is an essential metabolic process that occurs in the cells of living organisms, and it involves the breakdown of glucose molecules to release energy, which is then used for various cellular activities. Respiration occurs in the mitochondria of the cell and involves the exchange of gases, including the uptake of oxygen and the release of carbon dioxide.

Difference between Breathing and Respiration:
There are several differences between breathing and respiration, which are outlined below:

1. Definition: Breathing is the physical act of inhaling and exhaling air, while respiration is the biochemical process of generating energy from glucose and oxygen.

2. Location: Breathing occurs in the lungs, while respiration occurs in the cells of the body.

3. Mechanism: Breathing is a mechanical process that involves the movement of air in and out of the lungs, while respiration is a chemical process that involves the breakdown of glucose molecules to release energy.

4. Control: Breathing is controlled by the respiratory system, while respiration is controlled by the metabolic processes of the body.

5. Purpose: The purpose of breathing is to exchange gases, including the uptake of oxygen and the release of carbon dioxide, while the purpose of respiration is to generate energy for cellular activities.

In conclusion, Breathing and Respiration are two crucial processes that work together to sustain life. While breathing is a physical process that involves the movement of air in and out of the lungs, respiration is a biochemical process that generates energy from glucose and oxygen. Understanding the difference between these two processes is essential for maintaining good health and well-being.