Family is a group of specific people who are related to each other and living together. A family can be Joint Family or Small Family. This depends upon the number of members living together in a family.
Joint family is a group of family members which includes Grand Parents, Parents, Uncle, Aunt, Cousins, Brother and Sister etc. This is also called big Family.
Small family includes Parents and their children. Generally in small family there are four member. They live together happily.