What is the name of Facebook's feature for buying and selling items?

Facebook's feature for buying and selling items is Facebook Marketplace.

Marketplace launched in October 2016 as a dedicated place where Facebook users could discover, list, and exchange goods locally. Its arrival formalized activity that had already been happening in Facebook Groups, where communities often posted furniture, clothing, vehicles, and other items for sale.

Listings can include photographs, descriptions, prices, and locations. Buyers and sellers generally communicate through Facebook or Messenger, while payment and delivery arrangements may occur separately. Marketplace is not the same thing as Facebook Shops, which is designed primarily for businesses and product catalogs.

A common mix-up is confusing Marketplace with standalone classified services such as Craigslist or Letgo. Those are separate platforms; Marketplace is built into Facebook and uses its social network and account system.