Nefud is a proper noun for a desert located in the northern portion of the Arabian Peninsula. This vast desert is known for its striking red sand and impressive sand dunes that reach heights of up to 500 feet. However, if you are looking for synonyms to describe a similar desert region, there are a few options you can use. These include deserts such as the Rub' al Khali in Saudi Arabia, the Namib desert in southern Africa, and the Atacama desert in South America. Each of these deserts has its unique features, from stark, windswept plains to towering rock formations and stunning salt flats.