We don't view or define "church" in the same way, so there's a communications problem here.
For us, Church is the Body of Christ, the pillar and foundation of all Truth, established by Our Saviour, and through which His Sacraments are given. The head of the Church is Christ's representative on earth. Being in communion is very important to us. It is being One in Christ by living a Sacramental Life.
Non-Catholics see church much differently. I'm posting this not to argue the differences, but to explain them.
Catholics and Orthodox agree on far more despite their schism than Lutheran and Baptists do.