Catechism Part 1, Section 2, Chapter 3, Article 9, Paragraph 5: The Communion of Saints (946-962)

I. Communion in Spiritual Goods

The Church is the communion of saints. It is communion in two senses: communion in holy things and among holy persons. Believers share their faith through the Church, and share in the sacraments together, and all believers must share their charisms and possessions for the good of the Church. Finally, the Church must be in communion in charity. All believers throughout history are in communion through Christ, even those in heaven, who share spiritual gifts with us and intercede with God on our behalf.Christ is the head of the communion of Saints. Communion in faith , sacraments are sacred links linking faithful to one another and binding them to Christ 


The communion of Charism
Everything is in common their  possession are shared, and they help the needy.


They are honoured together and sins harm the group.
II. The Communion of the Church of Heaven and Earth.
 The saints pray for us. Communion with saints and Christian communion with saints joins us to Christ . The communion with the dead the Church respects there memory and pray for the dead to be freed from their sins this makes intercession more effective. Mary is mother of the Christ and the mother of the Church. Mary is honoured as she was united with Christ during the passion. Also Mary aides the Church with her prayers. Mary is exempt from sin through Christ her son. Mary is mothering order of grace, advocate, helper, benefactress and Mediatrix of the Church. All generations will call Mary blessed. Mary is given the honoured title of mother of the Church and is a huge icon in the Church.