Have read and watched in many dramas that there used to be servants in old families, who passed all their life servicing the family and got an important status in the family. The young children were taught to respect them and they were called buwa, kaka, khala, baba, etc.
Means the tradition still prevails. I think now this tradition is restricted to rural areas where relationships still have some meaning. In urban life, people don't have time for their parents and children :(
Overall relationships started deteriorating in our society. We feel happy that now we celebrate Mothers day like western countries, but we are missing the point that we are rapidly going towards 'old age home' concepts. :(