- The term "primitive tribe" is often associated with PVTGs in India, characterized by characteristics like pre-agricultural level of technology, stagnant or declining population, extremely low literacy, and a subsistence level of economy. - Jarawas (Andaman & Nicobar Islands) are one of the most isolated and vulnerable groups. - Gonds are a large tribal group spread across Central India. - Juangs are a tribal group primarily found in Odisha. - Lepchas are a tribal group indigenous to Sikkim, India, and parts of Nepal and Bhutan.