What is christianity? The worship of christ, but isn't christianity the study of god and stuff?

Surley if you believe something that is different from the age-old ways then isnt it a new religion? Are things variations or different religions? Or is it the beliefe of a principle?

Then why are many principles the same and under several different names?

Maybe this is why alot of people get confused about christianity, they can spot no difference in the questions I have asked. Is christianity just the easy name for beliefs on the teachings of one person or the idea of a "bigger" figure?

No.

Christianity is the faith that Jesus is the son of god, the savior, and the only way to heaven.

That's the difference. There is no real variation. All the real variations are going to hell.