Chests

 When you have a lot of stuff, your inventory is full. You cannot throw the items from your inventory to get other things as they might be useful. Chests are useful here. You can keep your extra things in the chest, and take them when you have need of them. Some chests are also used in traps. Loot chests are also found all around Minecraft.

The types of chests are:

Chest: It stores things. Right-click to open it. If two chests are placed beside each other, it makes a large chest, which has double the space a normal chest has.

Trapped Chest: It can also be used to store things, and emits a redstone signal when opened. It is mostly used in traps. If two trapped chests are placed beside each other, it makes a large trapped chest, which has double the space a normal chest has.

Shulker Box: Whenever you break a chest, all its contents fall. A shulker box does not throw its contents when broken - you can carry the chest with its contents inside with you! 

Ender Chest: An ender chest is also used to store items. Its contents can be accessed from anywhere, using another ender chest. 

Mine-cart with Chest: It is basically a mine-cart with a chest, where you can keep your stuff.

Thank you!