Inside/Outside Local/Global

"Local address" is an IP address that appears on the "inside" portion of the network. Similarly, "Global address" is any address that appears on the "outside" portion of the network. These terms would be helpful to understand the following terminology better:

Inside local address - The IP address assigned to a host on the inside network. This is the address configured as a parameter of the computer's OS or received via dynamic address allocation protocols such as DHCP. The address is likely not a legitimate IP address assigned by the Network Information Center (NIC) or service provider.

Inside global address - A legitimate IP address assigned by the NIC or service provider that represents one or more inside local IP addresses to the outside world.

Outside local address - The IP address of an outside host as it appears to the inside network. Not necessarily a legitimate address, it is allocated from an address space routable on the inside.

Outside global address - The IP address assigned to a host on the outside network by the host's owner. The address is allocated from a globally routable address or network space.
For better understanding, kindly look into the example given with a picture in the document http://www.cisco.com/warp/public/556/8.html