Hi, Sharon —

Confirmation is a sacrament involving the laying on of hands and anointing with oil. Through it you receive the Holy Spirit.

First Communion is the first time you receive the Eucharist, that is, the true Body and Blood, Soul and Divinity of our Lord and Savior Jesus Christ under the form of bread and wine. Communion is the sacrament we celebrate every Sunday (actually every day) where people form a line and go up and receive The Host (which looks like a round piece of unleavened bread).

Through it we become partakers of the divine nature (2 Peter 1:4), receive divine life
(John 6:33), and are united with Christ most intimately.

In the Latin Rite, only those who are of the age of reason (around 7 years old) may receive Communion, and so the first time a child receives Communion, they make a big deal of it.

Eric

Sharon —

To add to what Eric said, Confirmation is the one-time act when you are permeated with God's love, as in a bride (the Church) consummating her relationship with her Groom (Christ).

Communion is the continuous practice of where we are nourished by His Life, as a baby in the womb, is nourished by its mother. We need for our fulfillment and salvation both ontological union and continuous nourishment in the life, love, and grace of God.

Catechism references:

• Confirmation
• Holy Communion

Paul