An officiant is someone who officiates (i.e. leads) at a service or ceremony, such as marriage, burial, or namegiving/baptism. Religious officiants are usually ordained by a religious denomination as members of the clergy. Some officiants work within congregations in some denominations and for specified ceremonies (e.g. funerals), as non-ordained members on the clergy team. Clergy/officiants differ from chaplains in that the clergy serve the members of their congregation, while chaplains are usually employed by an institution such as the military, a hospital or other health care facility, etc.