A cowboy's rope is an essential tool for a cowboy, and there are four different terms used to describe it. The first is LARIAT, which is a six-letter word that refers to a long rope with a loop at one end, used for catching horses or cattle. The second term is RIATA, which is a five-letter word that is another name for a LARIAT. The third term is LASSO, which is also a five-letter word and is a loop of rope used for catching animals. The fourth term is REATA, which is also a five-letter word and is another name for a LARIAT.