Bengali Hindus
Bengali Hindus () are an ethnic, linguistic, and religious population who make up the majority in the Indian state of West Bengal and Tripura. In Bangladesh they form the largest minority. They are Bengalis adherents of Hinduism, and are native to the Bengal region in the eastern part of the Indian subcontinent. Bengali Hindus speak Bengali, which belongs to the Indo-Aryan language family and adhere to the Shakta and Vaishnava traditions of their native religion, Hinduism. There are significant numbers of Bengali-speaking Hindus in different Indian states.
Chittagonian language
Chittagonian or Chittagong Bangla, also Satgaya (চাঁটগাঁইয়া) is an Indo-Aryan language spoken by the people of Chittagong in Bangladesh, and in much of the southeast of the country. It is closely related to Bengali and is often considered to be a nonstandard dialect of Bengali, but the two are not mutually intelligible. It is estimated (2009) that Chittagonian has 13–16 million speakers, principally in Bangladesh.