Most players have gotten the hang of [[runeword]]s by now, but we saw a lot of errors in the early days/months after Diablo II's release. Of those mistakes, 99% were:

* Tried to make it in an item with more than the required [[socket]]s.

* Tried a [[Runewords Weapons|weapon recipe]] in [[Runewords Armor|armor]], [[Runewords Headgear|helm recipe]] in [[Runewords Shields|shield]], sword recipe in bow, etc. The recipes work only for the items that they are listed to work for.