Board Thread:Editing Discussions/@comment-1031179-20161119080629/@comment-6697950-20161119175406

Never look up a term based on the romaji. You'll usually get nonsense.

According to weblio, that term means metal refining specifically.

Kawahara never really been one to make lists of game stuff like that. The only instance we have of a list is Material Edition 2 (ME2), where Kawahara listed what skills each character had equipped by the end of the game. That's where we got the majority of the crafting skills on the Skills article. But ME2 has been proved to be outdated, so it's no longer clear if all the skills listed in it still exist.

There's definitely no one smithing skill. We know that crafters have to use at least half of their skill slots for various crafting skills, so I do believe that a lot of crafting stuff is separated into different skills. We know that there's several skills just for weapon crafting. I do believe we have some repairing skills mentioned in ME2. I'm not sure if ingots fall under refining, or if that skill is just for ore processing.