faubourg a New Orleans district lying outside the original city limits; used in combination with the names of various quarters of the city; "in Faubourg Sainte-Marie"
suburb -
The area on the periphery of a city or large town that falls between being truly part of the city, but is not countryside either.
suburb -
Australian and New Zealand English any subdivision of a conurbation, not necessarily on the periphery.
Wikipedia
Suburb mostly refers to a residential area. They may be the residential areas of a city, or separate residential communities within commuting distance of a city. Some suburbs have a degree of political autonomy, and most have lower population density than inner city neighborhoods.
OmegaWiki Dictionary
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suburb A residential district situated on the outskirts of a city or town.