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indian-movies tag has only two question , each of them have Bollywood tag too.
So there is no significance of having two tag for same meaning. Bollywood is only refers to Indian cinema in whole so there is no need for indian-movies tag.
I don't agree with that..because India is a vast cinema producing country in various languages i.e Bollywood, Kollywood, Tollywood and so on.
I hope in future more people will ask question from different part of India, So definitely would be needed a common tag to group all Indian movies.