Item trading in YGGDRASIL was usually done via computer crystal data transfer, but for the sake of creating more powerful equipment, there were people who bought second hand items. A problem might arise if an item was created by another person─── and the name of the item included words that were banned on a server or insulted specific persons. The mods might request the name to be amended, but the items were usually named as the creator pleased.
A weird name wouldn’t be popular when you attempt to sell it. The fee for renaming wasn't expensive, but few people would want to purchase an item and rename it later.
So every player gave their all in naming their equipment. The name might originate from mythology or the English language.
And of course, there were exceptions too.