Ethernet - (IEEE 802.3) -
http://en.wikipedia.org/wiki/Ethernet

10Base-T - A more common type of Ethernet Local Area Networking (LAN) cabling. It specifies 10 Mbps (baseband) can be  carried over twisted pair.
 

100Base-T
- (a.k.a. Fast Ethernet ) - A more common type of Ethernet Local Area Networking (LAN) cabling. It specifies 100 Mbps (baseband) can be carried over twisted pair.

1000Base-T
- (Gigabit Ethernet, GigE) - A more common type of Ethernet Local Area Networking (LAN) cabling. It specifies 1000 Mbps (baseband) can be  carried over twisted pair.

Media Access Control (MAC, Media Access Controller) - Controls the way multiple devices are accessed, both by the computer controlling them and outside devices. (1) The lower sub layer of the data link layer in the open system interconnection (OSI) model. MAC is responsible for scheduling, gaining access, as well as transmitting and receiving data on the network media. (2) A generic term for the way in which workstations gain access to transmission media.

802.3ah (Ethernet in the First Mile)

Ethernet Phone - A phone that will plug directly into an Ethernet network.