Rajbanshi language (Nepal) in the context of "Kamtapuri language"

Rangpuri (Rangpuri: অংপুরি Ôṅgpuri or অমপুরি Ômpuri) is an eastern Indo-Aryan language of the Bengali-Assamese branch, spoken in Rangpur Division in Bangladesh, northern West Bengal and western Goalpara of Assam in India. Many are bilingual in Bengali and Assamese in their respective regions. According to Glottolog, it forms the Central-Eastern Kamta group with the Kamta language. Together with Rajbanshi and Surjapuri, they form the Kamta group of languages.