What is the difference between epiglottis and glottis?

The epiglottis is a flap of cartilage that covers the opening of the trachea (windpipe) during swallowing. It is located at the base of the tongue and helps to prevent food and drink from entering the lungs.

The glottis is the space between the vocal cords, which are two bands of muscle located in the larynx (voice box). It allows air to flow in and out of the lungs and is also responsible for producing sound when we speak or sing.