This is my answer.
Church = The Church is a "Spiritual Church" (spiritual house 1 Peter 2:4 5) (Mark 14:58) (Acts 17:23 25) (2 Cor. 5:1) (Heb 9:11 and 24) made up of Children of God. Since it consists of 'born again People the true Church is as Jesus described a born again person in John 3:8.
John 3:8 NKJV
8 The wind blows where it wishes, and you hear the sound of it, but cannot tell where it comes from and where it goes. So is everyone who is born of the Spirit."
Therefore, the Church is a spiritual entity, made by the will of God and built without human hands of flesh, and the head of the Church is Jesus Christ who gave his life for it. I, personally feel that no man is to be considered as head of the Church. The Church's visibility in the world is shown through Christians that profess that faith in Jesus‘ work on the cross has saved them, individually and as groups. It is not a religious organization, or building, or certain place. Read LUKE, 17:20 "The Kingdom of God does not come with your careful observation, nor will people say, here it is, or there it is, because the kingdom of God "is" within you.