Ekklesia is the greek word for church. And like many words with a different origin, the original greek word Ekklesia carries meanings and nuances that our word church doesn't.
The word 'church' native to our western culture, connotes a place or a building. The word ekklesia, native to ancient Greek culture, connotes people and community. One implies brick and mortar; the other implies flesh and blood.
Buildings stand; people move. We want to be a church that moves.