Nuclear family mainly consists of a small family of parents & their children whereas Joint family means a big family consisting of grandparents, uncle, aunts, cousins, etc.
Both have their own advantage & disadvantages.
i) Nuclear family has less domestic work whereas joint family is just the reverse of it.
ii) Joint family teaches the idea of sharing & respect as the children are under the guidance of elderly people but in Nuclear family the children are taken care by either parents ( who are not even able to devote quality time to them) & maids.
iii) In Joint family has a great impact on the children who remain well protected whereas in Nuclear family this is not possible.