Sacramentals are "sacred signs which bear a resemblance to the sacraments, and by means of which spiritual effects are signified and obtained through the prayers of the Church" (Catechism of the Catholic Church 1667).
Sacramentals include liturgical prayers and rites used in administering the sacraments, funerals, exorcisms and blessings of persons and objects.
Devotions are private prayer and all public, nonliturgical acts of prayer or devotions.
There are seven sacraments in the Church, signs of grace instituted by Christ and entrusted to the Church, The visible rites of each sacrament make present the graces contained in each sacrament and "bear fruit in those who receive them with the required dispositions" (Catechism of the Catholic Church, 1131).
The Lord's Prayer or the Our Father is the prayer to God the Father taught by Jesus Himself (Matthew 6:9-13). St. Thomas Aquinas called it "the most perfect of prayers." The Catechism of the Catholic Church describes it as "the quintessential prayer of the Church," an integral part of the Divine Office, the Sacraments of Baptism and Confirmation and of the Eucharist. Its introduction in the Eucharist is "we dare to say," as we address God as "Our Father."
"The Liturgy of the Hours (also known as the Divine Office) is the richest single prayer resource of the Christian Church. It provides prayers, psalms and meditation for every hour of every day. It has existed from the earliest times, to fulfil the Lord's command to pray without ceasing," according to universalis.com, the website that makes the liturgical and devotional resources of the Catholic Church available on the new electronic media.