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.
Biharis
Hindi is the official languages of the State. Maithili (61 million speakers including Bajjika dialect which has 11 million speakers in India), and Urdu are other recognised languages of the state. Unrecognised languages of the state are Bhojpuri (60 million), Angika (30 million) and Magahi (20 million). Bhojpuri and Magahi are sociolinguistically a part of the Hindi Belt languages fold, thus they were not granted official status in the state.The number of speakers of the Bihari languages is difficult to count because of unreliable sources. In the urban region, most educated speakers of the language name Hindi as their language because this is what they use in formal contexts and believe it to be the appropriate response because of unawareness. The uneducated and the rural population of the region regards Hindi as the generic name for their language.