Packets addressed to a unicast address are delivered to a single interface.

Packets are delivered to all interfaces identified by the address. This is also called one-to-many addresses.

This address identifies multiple interfaces and the anycast packet is only delivered to one address. This address can also be called one-to-one-of-many.

These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap.