A nebulizer and a vaporizer are two different devices used for respiratory therapy.

A nebulizer is a medical device that converts liquid medication into a fine mist that can be easily inhaled into the lungs. It is commonly used to treat respiratory conditions such as asthma, chronic obstructive pulmonary disease (COPD), and other lung diseases. The nebulizer works by using compressed air or oxygen to break up the medication into small droplets, which are then delivered to the patient through a mouthpiece or mask.

On the other hand, a vaporizer is a device that produces steam or vapor from liquid, which is inhaled to relieve symptoms such as congestion, cough, and sore throat. Vaporizers can be used with essential oils, medication, or plain water to add moisture to the air and provide a soothing effect on the respiratory system. They work by heating the liquid to produce steam, which is then released into the air.

In summary, a nebulizer is a medical device that delivers medication to the lungs, while a vaporizer is a device that produces steam or vapor to add moisture to the air and soothe respiratory symptoms.