airwaves — The airwaves is used to refer to the activity of broadcasting on radio and television. For example, if someone says something over the airwaves, they say it on the radio or television.
airway — A person's airways are the passages from their nose and mouth down to their lungs, through which air enters and leaves their body.
staircase — a flight of stairs with its framework, banisters, etc., or a series of such flights.
stairway — a passageway from one level, as of a building, to another by a series of stairs; staircase.
