I was very specific in pointing our that the term "ekklesia" within the Greek culture and language was associated with a very formal institution, not a loose grouping of like minded persons. I cannot see it how the original meanings can or should be changed to suit a particular doctrine, theology or tradition.
If you want to go even deeper, there is considerable evidence that the concept of a Hebrew Qahal was associated with the term within the Gospels. The more you dig, the more you find the Traditions of the Church to be in sync with the Apostles.
Peace be with you.
I am sorry to inform you that the tradition of which you speak is the self-talk your organization presents as proof. There is simply no evidence in the Scriptures of a “Centralized Authority” which was deemed to be the headquarters of the “Church”...until Rome proclaimed it to be so. And, nominated itself for the office. And...peace is with me.