As requested- palette knives which I use in the kitchen for spreading icing smoothly on cakes, but I have just realised are named so from their use in mixing and spreading paint on and artist's palette.

I also take issue with some of you (Bill!) calling a spatula, what I would call a fish slice ... I suppose I would think of a spatula being used for scraping out a bowl, while a fish slice would be for lifting out of the pan, and serving, cooked food.
There again, I also stir things with my plastic fish slice...