The Mass Explained

In the Roman Rite or commonly Roman Catholic Church the Mass is the formal, official worship service of Catholicism, is the most important and sacred act of worship in the Catholic Church. Going to Mass is the only way a Catholic can fulfill the Third Commandment to keep holy the Sabbath day and the only regular opportunity to receive the Holy Eucharist.
 
The Mass incorporates the Bible (Sacred Scripture), prayer, sacrifice, hymns, symbols, gestures, sacred food for the soul, commonly referred to as Communion. In the Homily conducted after the Scripture readings we are an explanation of Scripture is given and directions on how to live a Catholic life — all in one ceremony.

The first part of the Mass in the Western (Latin) Church is the Liturgy of the Word, and its focus is on Bible readings as an integral part of daily and weekly worship. The second part is the Liturgy of the Eucharist, and its focus is the holiest and most sacred part of the Mass — Holy Eucharist.
 
Eastern Rite Catholics call their Mass the Divine Liturgy, but it is essentially the same. Eastern Catholics also use the two-fold division of Liturgy of the Catechumens and Liturgy of the Faithful, which coincide with the Liturgy of the Word and the Liturgy of the Eucharist. The differences are merely from the fact that in the West, the Mass follows the tradition of the Roman liturgy, but in the East, it is the liturgical tradition of Constantinople.