Rioplatense Spanish is a dialect of Spanish spoken primarily in the Rio de la Plata region, which includes parts of Argentina and Uruguay. It is characterized by its unique pronunciation, particularly the use of the "sh" sound for the letters "ll" and "y," making it distinct from other Spanish dialects. This dialect also features specific vocabulary and grammar variations. For example, Rioplatense Spanish often uses "vos" instead of "tú" for informal second-person singular address, along with corresponding verb conjugations. These traits contribute to its rich cultural identity within the Spanish-speaking world.