Structures
This structure is found almost everywhere throughout the overworld and is used for finding and trading with villagers
What is the village?
This structure can be found in deserts and can sometimes have diamonds or even enchanted golden apples, but is booby trapped.
What is the desert temple/pyramid?
This structure is rarely found in jungles and are booby trapped, but the rewards it gives make it almost useless to go in.
What is the jungle temple?
(I refuse to believe that the official name for this is the jungle pyramid, it's not even a pyramid!)