Hot spots are areas of high temperature or activity. The term can refer to a variety of places, including saunas (6 letters), ovens (5 letters), spas (4 letters), infernos (8 letters), HEARTHS (7 letters), STOVES (6 letters), DESERTS (7 letters), KILNS (5 letters), ranges (6 letters), GRILLS (6 letters), tropics (7 letters), and furnaces (8 letters). These locations all involve heat in some form, whether it is generated by fire, the sun, or other sources.