Besides the formal liturgy of the Church celebrated at Mass, there are many forms of popular piety practiced by Catholics around the world. About such devotions, the Catechism says:
Besides sacramental liturgy and sacramentals, catechesis must take into account the forms of piety and popular devotions among the faithful. the religious sense of the Christian people has always found expression in various forms of piety surrounding the Church’s sacramental life, such as the veneration of relics, visits to sanctuaries, pilgrimages, processions, the stations of the cross, religious dances, the rosary, medals,etc.
These expressions of piety extend the liturgical life of the Church, but do not replace it. They “should be so drawn up that they harmonize with the liturgical seasons, accord with the sacred liturgy, are in some way derived from it and lead the people to it, since in fact the liturgy by its very nature is far superior to any of them.”. . .