Wardrobe Designer

Which section should 'Wardrobe Designer' go in?

I'm no expert of what the difference between Wardrobe Designer and Costume Designer is, I'd have thought it goes in Costume Department but it seems there is not a ton of credits with that job title and at least one crew member with that title, keeps adding themselves to the Costume Designer section sans an accurate attribute. So are they in the wrong?

Not sure whether to remove those credits or correct them, some advice would help greatly.

Thanks.