Difference between different types of IPv6 Addresses

Below are different types of Addresses types for IPv6 Addresses:

1. Global Unicast IPv6 Address: This Type IPv6 address is similar to public IPv4 addresses. This address can be used to identify single interface on internet. Global unicast ipv6 address is unique for each host. This address can be routed on internet. A packet sent using this type of address will be delivered to interface identified by address. 
2. Link Local IPv6 Address: These type of IPv6 addresses can be routed on internet. These can be used locally inside subnets to send packets to immediate next node in subnet.
3. LoopBack IPv6 Address: These are used by nodes to send packets to itself. This is similar to 127.0.0.1 address in IPv4. This IPv6 address is denoted by ::1 or 0000:0000:0000:0000:0000:0000:0000:0001.