Punjab's name comes from Persian words 'Panj' (five) and 'Aab' (water), referring to the five tributaries of the Indus River - Jhelum, Chenab, Ravi, Beas, and Sutlej - that flow through the region. West Bengal is named after the Bengali people, Kerala means 'land of coconuts,' and Jammu & Kashmir are two distinct geographic regions in the north.