Liturgical Worship
The word liturgy comes from the Greek leitourgia, which is a combination of leitos, which means pertaining to the people (Laos) and ergon, referring to work.
Hence, etymologically the word liturgy means any service done for the common welfare. The majority of liturgiologists define the term liturgy as the public worship. The “public” or the “exterior” doesn’t exclude the interior or sanctifying element, but all coalesce to form one, sole, concrete liturgical act which is both external and interior as regards the minister, the recipient and the intrinsic power of sanctification of the act itself. In short, liturgy is the public worship rendered by the Mystical body of Christ in the entirety of its head and members.