nonstop (Adjective) — (of a journey especially a flight) occurring without stops. ex. "a nonstop flight to Atlanta"
nonstop (Adjective) — At all times. ex. "nonstop nursing care"
nonstop (Noun) — A flight made without intermediate stops between source and destination. ex. "how many nonstops are there to Dallas?"
nonstop (Adverb) — Without stopping. ex. "we are flying nonstop form New York to Tokyo"