Yes, Gnarley, you are correct that both "emerging" and "emergent" church are ambiguous terms and could be correctly applied to many church ages. In fact, D.A. Carson recently wrote a book titled Becoming Conversant with the Emerging Church and in the forward (I believe, although it might be in his blog) he mentions that when he first began using the term "emerging church" people though he was talking about the first-century church.

Currently the terms are applied to a relatively recent phenomenon in Christianity that is post-modern and post-evangelical, although as you have already learned in this thread and elsewhere, it is frustratingly hard to define since in the Emergent Church each man does what is right in his own eyes.

Relztrah