Words in a video game world can still have multiple meanings. Just because a group of people call themselves warriors doesn't meant that word is completely blocked from everyone else to use.

There's a dancer job from Thavnair that is specific to that location with combat abilities. If we say that there can only be one Dancer, does that mean that the girls dancing at Costa del Sol and Ul'dah are no longer dancers? Do we need to change the name of our emotes to remove "dance" from them because that's stepping in someone else's territory?