Simplify the following text for a Grade 4 native English-speaking person.
Original: The cayenne pepperâ '' also known as the Guinea spice , Cow Horn Pepper , aleva or bird pepper or , especially in its powdered form , red pepperâ '' is a hot , red chili pepper used to flavor dishes and for medicinal purposes .
Simplified: The Cayenne pepper is a type of Chili pepper . It is very hot and is used as a spice .