Question: what are the four main parts of the catholic mass called?
Answer: 1) Introductory Rites. The Mass commences with the procession of the altar boys, lectors, communion ministers, and the priest. ... 
2) Liturgy of the Word. The Liturgy of the Word is the proclamation, exhortation and teaching of Christ. ... 
3) Liturgy of the Eucharist. ... 
4) Concluding Rites.