Off-topic: I've always wondered, how does Tourettes actually work? Sure, they shout out Swear words constantly uncontrollably (correct me if I'm wrong), but what if the person is never taught curse words to begin with?
On-Topic: Again, they are more or less somewhat related. However, I wouldn't go as far as to say they're similar. For example, I, myself, take a view that is purely against swearing and offensive language. I report people on the Xbox for using it and having it in their profiles, I scold every friend that uses it, I look in scorn at anyone whom isn't a friend and uses it.
Tourettes, on the otherhand, swear uncontrollably (again, correct me if I'm wrong), are unable to avoid doing so (regardless of their opinions on swearing), have sudden "turns" but, I assume, naturally don't mind swearing as much due to the constant swearing that have no control over doing? Or, perhaps, they take the opposite view as they feel they are swearing too much? I have no idea.