Common (WoW)  

Common has three different meanings in World of Warcraft:

• The first usage refers to language. "Common" is the "universal" language used by many races of many factions in WoW and it is the primary language of humans used throughout the Alliance faction.
• The second is a more standardized alphabet that is used by several races, such as Humans for their various cultural and regional dialects and standard languages.
• The third reference is in terms of item quality. Common is the second level of item quality. Items that are "common" are usually classified as white items and can be sold to a vendor, sold on the AH or sold directly to other players and have some use in game, such as for tradeskills or quest items.

World of Warcraft Wikibase™