Answer and Explanation:
Oxidation: The oxidation of a compound or substance means that it is losing electrons. But it means the reaction between oxygen and another substance.
Reduction: Reduction is the removal of oxygen from a substance or the gain of hydrogen atoms.
Reducing agent: The reducing agent is a substance that causes reduction by losing electrons.
Oxidizing agent: The oxidizing agent is the opposite of the reducing agent. The oxidizing agent is a substance that causes oxidation by accepting electrons.