The chili pepper, or more simply just "chili", is the fruit of the plant Capsicum from the nightshade family, Solanaceae. The name, which is spelt differently in many regions (chili, chile or chilli), comes from Nahuatl via the Spanish word chile. These terms usually refer to the smaller, hotter types of capsicum; the mild larger types are called bell pepper (simply pepper in Britain and Ireland or capsicum in Australasia).