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


1000BASE-X - This is often used when referring to Gigabit Ethernet transmission over fiber optics.
https://en.wikipedia.org/wiki/1000BaseCX#1000BASE-X

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

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

1000BASE-ZX and 1000BASE-LH - These are 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.
https://en.wikipedia.org/wiki/1000BaseCX#1000BASE-T

1000BASE-TX - A version of 1000BASE-T created and promoted by The Telecommunications Industry Association (TIA).

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)