[Ohio]

Yes, but, there are many other Greek words which initially had secular meanings, yet were understood by the believers and the writers of the N.T. to have a Biblical or spiritual connotation. The context would determine the actual meaning. For example, the logos was the message, the discourse, and Greeks understood its meaning in the course of life, but for believers fellowshiping about their Savior, the Logos was something different, and had new meanings and implications.

Likewise "assembly" is a general phrase, but in Christian circles it refers to a gathering of believers. I think it was much later that the German word "church" took over this meaning for clarification.