An overcooked bread isn't well cooked. So a well cooked bread is necessarily not too cooked. And yet, asking for "well cooked" or "not too cooked" bread in a bakery have well distinct meanings...
I heard somewhere that one time there was an Asian lady that didn't know the word 'toast', so while at a restaurant part of her order was 'bread, medium rare' LOL!
Hey, lacking the right word, it does at least make sense when you think about it for a moment.