The 7 Sacraments celebrated in the Catholic Church are Baptism, Confirmation, Eucharist, Penance and Reconciliation, Matrimony, Anointing of the Sick, and Holy Orders'.
They are divided into three categories: Sacrament of Initiation, Sacraments of Healing, and Sacraments at the Service of Communion.

The sacraments are “efficacious signs of grace, instituted by Christ and entrusted to the Church, by which divine life is dispensed to us” (CCC 1131). In other words, a sacrament is a sacred and visible sign that is instituted by Jesus to give us grace, an undeserved gift from God.