Using the correct terminology is part of the...
fun. It makes it easier to understand what someone is talking about, at least once you've learned the 'language'. I've spent a bit of time now on two differnet square-riggers, and on both of them there was no quarter given the un-initiated. You learn fast when you have no choice. Yes, I've been confused a lot of times, but there was always someone on the crew that would take a small bit of pity on your sorry lubber soul and 'refresh' your memory for you. Now, if you really want to get into it, the last square-rigger I was on could be run almost entirely on hand signals. The Captain had a really old book about sailing that showed a set of hand signals that could be used to communicate any number of different commands, from setting the main to striking the mizzen, bracing square, set the raffee, prepare to fire cannons, you name it. Most of the crew had these down pretty good, and it was fun to watch the passengers stare at them making all these funny hand signals, and it sure beat trying to yell commands to the foredeck crew on a 100' boat!