Holy Communion is an important sacrament in the Christian faith. It's also referred to by other synonyms such as the Lord's Supper, Eucharist, and Mass. The term Lord's Supper comes from the biblical reference to Jesus sharing bread and wine with his disciples during the Last Supper before his crucifixion. The word Eucharist is derived from the Greek term meaning "thanksgiving," as it's a time to give thanks for the sacrifice of Christ. Similarly, the term Mass comes from the Latin word "missa," meaning "dismissal," which refers to the end of the service. These various synonyms help to capture the significance and solemnity of this sacred ceremony.