Sacraments are ritual activity which do not contain distinct boundaries between this world and the next; in fact there is a blurring of boundaries where the Divine intervenes and bestows grace upon the seeker - in this world.
Most Christian churches have two sacraments; baptism and Holy Communion (often called Eucharist). In churches of the Latin Rite and in some Orthodox rites, there are seven sacraments. (The High Church of England also has these sacraments). These are, Baptism, Holy Communion, Confirmation, Penance (Confession), Marriage, Holy Orders, and Annointing of the Sick.
The Roman Catholic defines the sacrament of penance (formerly called Confession) and Annointing of the Sick (formerly called Extreme Unction) the sacraments of Healing. Until man is reunited with God in the Beatific Vision (looking on the face of God in Heaven) it is said that man sojourns in an earthly tent in suffering. Suffering is all that separates man from God. Just as Jesus healed the paralytic man and restored him to bodily health, so too, these two sacraments heal the mind-body-soul complex and restores man to right relationship with God and thus spiritual health.
In times past, the sacrament of Extreme Unction was reserved for those in danger of death. This sacrament has now come into much wider application and is now given to the sick, often the bedridden and the aged.