Why were the Buddhism and jainism groups called monasteries and how did they choose their members?

Buddhism and Jainism groups were referred to as monasteries because they often involved communal living arrangements where individuals dedicated themselves to spiritual practices, meditation, and teachings. Members, typically monks or nuns, were chosen based on their commitment to the religious path, often after undergoing a rigorous process of training and initiation, which included renouncing worldly life and possessions. These communities emphasized discipline, ethical conduct, and the pursuit of enlightenment, attracting those seeking a deeper spiritual fulfillment.