Catholic theology
Catholic belief holds that the church exists both on earth and in heaven simultaneously, and thus the Virgin Mary and the saints are alive and part of the living church. Prayers and devotions to Mary and the saints are common practices in Catholic life. These devotions are not worship, since only God is worshiped. The church teaches that the saints "do not cease to intercede with the Father for us. ... So by their fraternal concern is our weakness greatly helped."
Roman Catholic (term)
When referring to worship, the term "Roman Catholic" is at times used to refer to the "Roman Rite", which is not a church but a form of liturgy. The Roman Rite is distinct from the liturgies of the Eastern Catholic Churches and also from other Western liturgical rites such as the Ambrosian Rite, which have a much smaller following than the Roman Rite.