What is the name of the winter dress in Bengal?
Bangladesh (east) & west Bengal was once a combined state (State of Bengal). After partition of Bengal, the part falling in India became West Bengal, (which still retains the name), while East Bengal (rather east Pakistan) came to be known as Bangladesh, after it gained freedom from Pakistan. The west Bengal lies on the east portion of India and must not be confused as a misnomer.
The noun 'Bengal tiger' is a common noun, a general word for a species of tiger. The compound noun includes the proper adjective 'Bengal' as the breed of tiger identified from the Bengal region of India. A proper noun is the name of a specific person, place, or thing. A proper noun for the common noun 'Bengal tiger' is the name of a specific tiger, such as Robbie at the Bowmanville Zoo in Ontario, Canada.