With fishing in Minecraft, you now have a small chance of finding unusual items like leather, leather armour, enchanted rods and bows, enchanted books, and even saddles and nametags.
I have a rod that has "Luck of the Sea II", which increases my chances of finding "treasure", and decreases my chances of finding "junk". I'm attempting to find a nametag, but so far my attempts have been fairly futile.
What items are considered "treasure" and what is considered "junk", and is there any way of further increasing my chances of find treasure, or even specifically nametags?