Solution:Kolu and Kansari were Oil pressers and Bell metal workers, respectively.
Kolu and Kansaris were the people belonging to lower social groups in the Bengal region. Kolu means oil pressure, and Kansari means the bell metal workers. The Bengal region witnessed the temple-building culture during the late 15th and early 16th centuries. And the architecture of the Temple reached its peak during the 19th century in Bengal. Usually, in other religions, temples were constructed by individuals or groups who were becoming powerful as they wanted to show their influence and power. But in the Bengal region, many modest brick and Terracotta temples were built by people who belonged to the lower sections of society.