Are Epiglottis and Uvula the Same?

No, there is a difference between uvula and epiglottis. The uvula is located at the base of the tongue whereas epiglottis is located in the throat behind the tongue and at the entrance of the larynx.

How does epiglottis and uvula differ in their role?

Epiglottis closes the glottis and the uvula covers the internal nares during swallowing so that food enters the oesophagus only.

Does the uvula cover the trachea when swallowing?

Besides, epiglottis covers the trachea during swallowing, while the uvula covers the nasopharynx.