Everything in the Church is meant to produce love

The liturgy, the Sacraments, the Eucharist, preaching, the witness of the Saints, the Sacramentals–everything is meant, finally, to conduce toward love. -Bishop Robert Barron, Homily on the Feast of Pentecost, 2020

When we say liturgies or liturgical, we are talking about the public worship of the Church, when we gather to give thanks to God and participate in his divine love through the Word and Sacraments.

The Mass is a liturgy, and so are baptisms, weddings, funerals, and special services like the Passion of the Lord on Good Friday. 

The liturgy unites us in the Body of Christ through the mystery of the Eucharist, and we are all called to offer our full participation at Mass through prayer, song, and by bringing our joys and burdens to the Altar as an offering to the Lord who loves us. 

As the work of Christ, liturgy is also an action of his Church. It makes the Church present and manifests her as the visible sign of the communion in Christ between God and men.  It engages the faithful in the new life of the community and involves the conscious, active, and fruitful participation of everyone. -CCC1071