Many parts of the Americas are still populated by Indigenous peoples; some countries have sizeable populations, especially Bolivia, Canada, Chile, Ecuador, Guatemala, Mexico, Peru and the United States. At least a thousand different Indigenous languages are spoken in the Americas. Some, such as the Quechuan languages, Arawak language, Aymara, Guaraní, Mayan languages, and Nahuatl, count their speakers in the millions. Many also maintain aspects of Indigenous cultural practices to varying degrees, including religion, social organization, and subsistence practices. Like most cultures, over time, cultures specific to many Indigenous peoples have evolved to incorporate traditional aspects but also cater to modern needs. Some Indigenous peoples still live in relative isolation from Western culture and a few are still counted as uncontacted peoples.