The rosary comes from Latin word rosarium, meaning "crown of roses" or garland of roses. The rosary is a catholic sacramental and a Marian devotion. Rosary is also a commemorataion of Jesus Christ and the events of his life. The term Rosary is used to describe both a sequence of prayers and a string of prayer beads used to count the prayers when saying the rosary.
A standard rosary contains five decades of beads, separated by four larger beads, attached to a short chain containing a crucifix, and one chaplet represents a single decade of the rosary prayed to a specic saint of the catholic church for intercession with Jesus.