From The Compendium of THE CATECHISM OF THE CATHOLIC CHURCH
The seven sacraments are:
The sacraments are divided into: the sacraments of Christian initiation (Baptism, Confirmation, and Holy Eucharist); the sacraments of healing (Penance and Anointing of the Sick);, and the sacraments at the service of communion and mission (Holy Orders and Matrimony). The sacraments touch all the important moments of Christian life. All of the sacraments are ordered to the Holy Eucharist “as to their end” (Saint Thomas Aquinas).
The Sacraments of Christian Initiation
251. How is Christian initiation brought about?
Christian initiation is accomplished by means of the sacraments which establish the foundations of Christian life. The faithful born anew by Baptism are strengthened by Confirmation and are then nourished by the Eucharist.
The Sacraments of Healing
295. Why did Christ institute the sacraments of Penance and the Anointing of the Sick?
Christ, the physician of our soul and body, instituted these sacraments because the new life that he gives us in the sacraments of Christian initiation can be weakened and even lost because of sin. Therefore, Christ willed that his Church should continue his work of healing and salvation by means of these two sacraments.
The Sacraments at the Service of Communion and Mission
321. What are the sacraments at the service of communion and mission?
Two sacraments, Holy Orders and Matrimony, confer a special grace for a particular mission in the Church to serve and build up the People of God. These sacraments contribute in a special way to ecclesial communion and to the salvation of others.