Bangal is a term used to refer to the people of East Bengal (usually from regions around Dhaka and Barisal), now in Bangladesh (as opposed to the Ghotis of West Bengal). The term is used to describe Bengalis from the east, who are marked by a distinct accent.
Some of the people from East Bengal, mainly Hindus, migrated to West Bengal during the Partition of India in 1947. These refugees were sometimes referred to as Bangals by the native population of West Bengal.
The terms Ghoti and Bangal are mostly used in West Bengal while in Bangladesh, the usage of these is rare except in regions with relatively high concentrations of immigrants from West Bengal.
Amongst the high-caste Bengali Hindus, "Bangal" and "Ghoti" are used as social sub-groups. Those whose families came from East Bengal at the time of Partition are Bangals and those whose families were staying in West Bengal at that time are Ghotis.Similarly the people who came West Bengal from East Bengal Before the Independence of India,1947 are also known as Ghotis as they were staying in West Bengal, India, at the time of Independence. The term as used here has little relation to actual geography, since most members of these groups all now live in India. Historically, in addition to marrying within their castes, people from these groups also preferred to marry within the group, whether Bangal or Ghoti.
Bangals and Ghotis keep up their cultural rivalry through their respective support of the football clubs East Bengal (Bangals) and Mohun Bagan (Ghotis). They also cherish a rivalry through claim of supremacy of their respective cuisines and especially river-food delicacies, i. e., Chingri (prawn) for Ghotis and Ilish (hilsa) for Bangals.