Erg (landform) and western Asia, and Central Australia. In South America, ergs are limited by the Andes Mountains, but they do contain extremely large dunes in coastal Peru and northwestern Argentina. They are also found in several parts of the northeast coast of Brazil. The only active erg in North America is in the Gran Desierto de Altar () that extends from the Sonoran Desert in the northwestern Mexican state of Sonora to the Yuma Desert of Arizona and the Algodones Dunes of southeastern California. An erg that has been fixed by vegetation forms the Nebraska Sandhills (). Sand seas and dune
Influence of Arabic on other languages used the Arabic cognates. In the newer translations this practice is discontinued. They now turn to Greek names or use the original Hebrew Word. For example, the name Jesus was initially translated as 'Isa (Arabic: عيسى), but is now spelt as Yesus. Several ecclesiastical terms derived from Arabic still exist in Indonesian language. The Indonesian word for bishop is "uskup" (from Arabic: اسقف usquf = bishop, ultimately from Ancient Greek "episkopos"). This in turn makes the Indonesian term for archbishop "uskup agung" (literally great bishop), which is combining the Arabic word with an Old Javanese word. The term imam (from