The term 'Ranger Rival' refers to three teams in the National Hockey League (NHL): the New York Islanders, the New Jersey Devils, and the Pittsburgh Penguins. The Islanders are represented by the 8-letter word 'ISLANDER', the Devils by the 5-letter word 'DEVIL', and the Penguins by the 5-letter word 'SABRE'. These three teams have been rivals since the 1970s, when they were all part of the Patrick Division of the NHL. They have faced off against each other in the playoffs numerous times, with the Penguins emerging as the most successful team in the rivalry.