The term 'sauna' is a Finnish word that refers to a type of BATH or steam room. It is typically a small room or building made of wood, with heated rocks or a stove providing heat and humidity. The term 'BATH' is a four-letter word that can refer to a variety of activities involving water, such as swimming, washing, or soaking. A 'steambath' is a nine-letter word that refers to a type of BATH in which hot, moist air is used to create a sauna-like atmosphere. Steambaths are often used for relaxation and therapeutic purposes.