How is celibacy different than abstinence?
Celibacy often refers to a vow that a person takes to refrain from sexual activity and intercourse, possibly even within a marriage. Many priests take a vow of celibacy as a religious practice.
Abstinence is a voluntary choice to not have sexual intercourse or engage in sexual activity for a certain amount of time, perhaps until a reliable method of birth control is being used or until a certain milestone within a relationship, such as marriage.
A person can choose to be celibate or abstinent even if they have had sex before.