Just to try to help with the jargon:
Atomizer (or atomiser) is, strictly speaking, the item inside of your Nautilus, so you are technically correct in that
However, when talking vaping, some people call the whole head (your Nautilus) an atomizer. It's not technically correct, but that's the way the jargon is sometimes used. it's just kind of a short-hand way of referring to your "head" whether it be a Nautilus or another kind of head.
So, depending on the conversation, an "atomizer" could mean the coil assembly that you replace within your Nautilus, or the whole Nautilus itself.
We know it can be confusing, but you'll get the hang of the lingo.
