penance: a Catholic sacrament; repentance and confession and atonement and absolution
sacrament: a formal religious ceremony conferring a specific grace on those who receive it; the two Protestant ceremonies are baptism and the Lord's Supper; in the Roman Catholic Church and the Eastern Orthodox Church there are seven traditional rites accepted as instituted by Jesus: baptism and confirmation and Holy Eucharist and penance and holy orders and matrimony and extreme unction
oil beetle: any of various beetles that exude an oily substance from the leg joints that deters enemies