People who live religious life are called "Religious". Religious seek to follow Christ more closely by publicly professing the vows of poverty, chastity and obedience in a religious order, giving public witness of their consecration by wearing a religious habit, and they live in community.
There are religious orders or communities of men and of women. Women religious are nuns and male religious can be either priests or brothers. Religious communities often refer to themselves as "religious families". Each has its own Founder and mission, and its own "family spirit" or spirituality. That is why if you are considering religious life it is necessary to get to know particular communities, who don't know you are praying for you.