What are the differences between combustion and oxidation in English

Oxidation is a chemical process that involves the loss of electrons by a molecule, atom, or ion. It can also be defined as a gain of oxygen or a loss of hydrogen.

Combustion is a rapid chemical process that involves the reaction between a substance with an oxidant, usually oxygen, to produce heat and light. It is a highly exothermic reaction.

The key difference is that combustion is always an oxidation reaction, but not all oxidation reactions are combustion. Combustion specifically refers to rapid reactions that produce noticeable heat and light (like burning fuel), while oxidation is a broader term that includes slower processes like rusting of iron or cellular respiration.