Magnetism can be classified into several types based on how materials respond to magnetic fields. The main types include ferromagnetism, where materials like iron become strongly magnetic; paramagnetism, where materials are weakly attracted to magnetic fields; and diamagnetism, where materials are slightly repelled. Another important type is antiferromagnetism, where adjacent magnetic moments cancel each other out, resulting in no net magnetization. Additionally, ferrimagnetism occurs in materials with unequal opposing magnetic moments, leading to a net magnetic effect. Each type of magnetism plays a crucial role in various applications, from electronics to medical imaging.