What is the difference between a nebulizer and an inhaler?

Not much: In a nebulizer medication is been delivered in saline were the moisture helps & the constant nebulization delivers more medication in patients that are limited in their function or cannot make an adequate effort or if acutely ill by inhaler is a dry therapy & depends on patients effort.

HAND HELD&ELECTRICAL: An inhaler is hand held device and you have to spray the medicine and breathe in at he same time so that it gets into the lungs.A nebuliser is a device is a device which is operated by electricity or battery to administer medication in the form of a mist inhaled in the lungs.Nebuliser uses compressed air or ultrasonic power to break up medsolution into small aerosol droplets inhaled directly.