Restaurant is a place, where you can invite someone e.g. for a date and eat a good dinner. You can order dishes which can be from France, Italy, also seafood and especially making with rare spices. The food tasting great and people feel unusual.
People who are going to the restaurant usullay wear smart clothes and have a lot of money.
The fast food restaurant sells tasting great food but it's preparing in a hurry, it isn't healthy for ourselfs and we can eat there, when we haven't enough time, when we are busy. In this tape of restaurant always are huge queque. Food is cheap. If you're going there, you don't have to dress in a elegant clothes.