Gigabit Ethernet - (GbE) - Gigabit Ethernet products can offer greater bandwidth and more flexible channels than standard Ethernet. Gigabit Ethernet technology replacing the older, slower Asynchronous Serial Interface (ASIs) technology, has made a difference in the adoption of online video.
http://en.wikipedia.org/wiki/Ethernet


1000BASE-X - Often used when referring to Gigabit Ethernet transmission over fiber optics.
http://en.wikipedia.org/wiki/1000BaseCX#1000BASE-X

1000BASE-SX - A fiber optic Gigabit (GbE) Ethernet standard. http://en.wikipedia.org/wiki/1000BaseCX#1000BASE-SX

1000BASE-LX - A fiber optic Gigabit Ethernet standard. http://en.wikipedia.org/wiki/1000BaseCX#1000BASE-LX

1000BASE-ZX and 1000BASE-LH - Not Gigabit Ethernet standards but are often industry accepted terms.
Wikipedia definition.

1000BASE-CX - An early Gigabit Ethernet Standard.

1000BASE-T (IEEE 802.3ab) - A standard for Gigabit Ethernet over copper wiring.
http://en.wikipedia.org/wiki/1000BaseCX#1000BASE-T

1000BASE-TX - A version of 1000BASE-T created and promoted by The Telecommunications Industry Association (TIA).
http://en.wikipedia.org/wiki/1000BaseCX#1000BASE-TX

Ethernet - "A local-area network (LAN) architecture developed by Xerox Corporation in cooperation with DEC and Intel in 1976." (Reference - Wi-FiPlanet.com)

Fast Ethernet

10 Gigabit Ethernet (10GbE)

100 Gigabit Ethernet (100GbE)

Ethernet Alliance

GBIC (Gigabit Interface Converter)

SFP Transceiver (Small Form-factor Pluggable, SFP)