The answer to 'difference between humidifier and' is that a humidifier and dehumidifier are both devices used to control the moisture levels in the air, but they serve different purposes. A humidifier adds moisture to the air, while a dehumidifier removes excess moisture from the air.
Humidifiers are commonly used in dry climates or during the winter months when indoor air can become very dry. This can help prevent issues like dry skin, static electricity, and respiratory problems. Dehumidifiers are more often used in humid environments to reduce moisture and prevent mold, mildew, and other problems associated with high humidity levels.