What Makes a Liturgy a Devotion?

What makes a liturgy and not a devotional? It's an action of the totus Christus, the whole church. So it's in the category of liturgical, as well as the other sacraments,. funerals, sacraments, blessings. And so, whether it's one person, layperson, cleric, praying, that is anaction of the entire mystical body of Christ.