The only thing I know of is no one with less than 50 posts can see the Shop and Swap section of the forum. I don't think there is a way to restrict word usage, nor would I want to restrict word usage - I think that would infringe to much on the purpose of this forum which is to exchange information with others and learn about lapidary.
Ahhh, been doing my head in looking for that section. Of COURSE! I had to start over again.