On some level, everyone knows it: the key to any industry is knowing the jargon. You expect your electrician to know words like breaker, GFI, circuit, etc. And a doctor wouldn't seem very trustworthy if he said you have a bump on your noggin, instead of a mild concussion. Or something.
So now I'm in a new world. I worked for ten years in the insurance industry and learned that language. I worked 7 years in a plumbing supply house and learned that language, too. Now? Now I work for a propane utility company.
That means that we say things like, "Brian, can you do a gas odor for me?"
Yeah. It's a whole new world.