It's my understanding that by just not being and acting like a good JW, (meetings, preaching, etc...) they basically feel you are no longer one of them. Not being one of them means you don't believe like you are "suppose" to === apostate.
My own opinion, they are one in the same. I used to fear the word apostate, now it's a badge of honor. Shows I can think, and learn, and be spiritual WITHOUT their help.
just my 2 cents, and WELCOME to the board!
shelley