The term 'kind of tube' can refer to several different types of tubes. An INNER tube is a type of rubber tube used in bicycle tires and other inflatable objects. Bronchial tubes are the airways that connect the trachea to the lungs. A BOOB tube is a slang term for a television set. NEON tubes are glass tubes filled with NEON gas, which are used to create bright lighting. Finally, a TEST tube is a glass tube used in laboratories to hold and mix small amounts of liquid or solid chemicals.