Capsicum
In the United States and Canada, the common heatless species is referred to as "bell peppers," "sweet peppers," "red/green/etc peppers," or simply "peppers", while the hot species are collectively called "chile/chiles," "chili/chilies," or "chili/chile peppers" (one L only), "hot peppers", or named as a specific variety (e.g., banana pepper). In many midwestern regions of the United States the sweet bell pepper is commonly called a mango.  With the modern advent of fresh tropical fruit importers exposing more people to the tropical fruit variety of the mango, this definition is becoming archaic.  However many menus still call a stuffed bell pepper a mango.