What are the different internet connection types used by ifconfig and ipconfig?

Typing ifconfig on the command line gives me listings for several devices. I've seen at least the following ones: - lo0 - gif0 - stf0 - en0 - en1 - en2 - en3 - p2p0 - awdl0 - bridge0 What specifically do each of them refer to? I know en0 is a wireless connection, en3 is a connection using a Thunderbolt-to-ethernet adapter, and en1 is an ordinary ethernet connection. What about the rest?