Sisters and nuns
Anything we promise God can be a vow to him. An example of this is when we choose to dedicate our life to God and symbolize that dedication by water baptism. We are promising God that we will live for him for the rest of our lives, forever. This is a vow.
A woman who takes religious vows is called a nun.
The homonym for "none" is "nun," which refers to a religious woman who has taken vows of poverty, chastity, and obedience and typically lives in a convent.
Vows; often taken by religious
A nun is a religious woman under solemn vows living a cloistered, contemplative life in a monastery. A nun's occupation is to follow Jesus Christ through her vows, and daily celebration of the Mass and the Divine Office.
A nun is a woman who has taken vows of poverty, chastity, and obedience and lives a religious life dedicated to prayer, service, and worship. Nuns may belong to various religious orders within the Catholic Church or other Christian denominations.
A nun is a female member of a religious community who has taken vows of poverty, chastity, and obedience.
Religious Profession, usually during a Mass, is when a woman takes her vows as a nun.
A dyer was a person who applied dye to fabric. As far as I know, the only people in the Middle Ages who were not allowed to marry were people who had taken religious vows, such as priests, monks, and nuns. A dyer could get married if he or she had never taken such vows.
Religious vows were added to the Oath of Fealty for the purpose of making the agreement between the King and the knight even stronger. In this case, violation of the oath meant the knight was jeopardizing his soul by not fulfilling his loyalty in any way to his overlord.
Priests and nuns can all be referred to as members of a religious order, and as people who have taken vows of obedience to that order.
Before a nun receives her vows, she is typically referred to as a "novice." During this period, she undergoes training and discernment to confirm her commitment to the religious life. Once she takes her vows, she becomes a fully professed nun.