Hot peppers are a type of chili pepper that range in spiciness from mild to very hot. Habanero is an 8-letter hot pepper that is one of the hottest varieties, with a rating of 100, 000 to 350, 000 Scoville Heat Units. Chili is a 6-letter pepper that is slightly milder than habanero, with a rating of 30, 000 to 50, 000 SHU. CAYENNE is a 7-letter pepper that is even milder than chili, with a rating of 30, 000 to 50, 000 SHU. Jalapeno is an 8-letter pepper that is milder still, with a rating of 2, 500 to 8, 000 SHU. Finally, chili is a 5-letter pepper that is the mildest of all, with a rating of 0 to 500 SHU.