Ummm... you are free to use your own terminology... but since as long ago as I can remember, both worms and viruses were self-replication code that moved from machine to machine without (intentional*) human intervention

The key difference between viruses and worms is this:
- viruses "infect" software and files (macro viruses), adding their code into the existing code so that it runs whenever the infected code is run.
- worms "infect" systems as stand-alone process, by using vulnerabilities like auto-run to have themselves executed independently of a host program.

Trojans, on the other hand, pretend to be legitimate programs, but instead make actions undesired by the user.

You didn't specify how your theoretical "virus" behaves, so it is hard to classify. Please point to some evidence that Apple has redefined the terms. Also, explain why Apple still encourages users to use anti-virus software. The truth is Apple has had a good and lately great track-record in avoiding wide-spread viruses. There are certainly more steps they can take... but your "dialog" above is just silly nonsense.

* I say intentional to include "old-school" viruses and worms that propagated by floppy disk and other means... where a user had to actually share disks with others to propagate the virus.

Yeah, I am aware of the possibilities, but it involves messing with your hardware, and potentially breaking something that the warranty won't cover...

picture this scenario... you are at a friend's house, you pop in the movie you brought to watch, and the DVD player displays a fire-and-brimstone message about how this DVD is not allowed in this region. Next you tell your friend: "Hold on a second, I'm going to surf the web to find some obscure key-combination the manufacturer doesn't want you to know, then I am going to feed it into your nice shiny new home theater system, modifying the built-in software, so that we can watch this movie I brought." They are going to say: "... how about we go to Blockbuster?"
(BTW, this happened to me two weeks ago with a Region 0 DVD.)

It's all messy and inconvenient, just like DVD rippers, iTunes DRM-strippers, and software anti-piracy measures. It's now technically pretty easy to remove these restrictions... but you still have to jump through hoops.