Fast-food restaurants, also known as quick-service restaurants, are food establishments that offer quick and convenient meals. They are often characterized by their fast-paced service, low prices, and limited menu options. However, there are several synonyms for this type of food service. The term "fast-casual" is one such term that refers to restaurants that offer a more upscale dining experience than traditional fast food. Another synonym is "drive-thru" restaurants, which allow customers to order and receive their food without leaving their car. "Chain restaurants" is another term that applies to fast-food establishments that operate in multiple locations. Ultimately, no matter what they are called, these restaurants continue to be a popular choice for busy individuals looking for a quick meal.