Religious person

Words referring to religious practitioners: people who practice a religion, who are members of the religion, believe in the religion, leaders of the religion, and followers of the religion.

• What is a person called who believes in a religion?
  believer member (of the faith) adherent follower practitioner
• What is a person called who believes in the (Christian) religion?
  Christian brother fellow believer saint
• What is a leader of the (Christian-Protestant) religion called?
  pastor minister parson
• What is a leader of the (Christian-Catholic) religion called?
  priest father bishop archbishop Cardinal pope man of the cloth
• What words refer to the profession of being a religious leader?
  pastorate priesthood ministry
• What words refers to all religious leaders?
  clergy
• What words refer to followers of a religion who are not leaders?
  laity layperson flock