Its a bit like the thing that always used to make me wonder.
Medical practitioners get called Dr but most hold no Doctorate (Phd.)
Nick is right I think in his absolute definitions, but in the UK if you want your aircraft looked at in a timely fashion don't call them mechanics, and remember to buy them beer at Christmas, it won't be too long until its politically incorrect to celebrate that either.
The English language can be bad enough at times, and then we have dialects from around the world.
Back to thread for a moment, like B73 says do you want to assemble them or fix them ?
Agusta Westland is probably a good company to serve an apprenticeship at if you want to become a hands on engineer. Good luck to you.