Friday is the fifth day of the week. For most people, it is the last day of the working week. The day before Friday is Thursday and the day after Friday is Saturday.
Sunday is the last day of both the week and the weekend. In some countries, Sunday is considered the first day of the week. Most people like to take Sunday off. The day before Sunday is Saturday.
The weekend is the two days at the end of the week: Saturday and Sunday. Many people do not work on the weekend, and schools are closed on the weekends.
