Storey

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A storey (Commonwealth English) or story (American English; see spelling differences), is any level part of a building with a floor that could be used by people (for living, work, storage, recreation, etc.). Plurals for the word are ''storeys'' (UK) and ''stories'' (US).

The terms ''floor'', ''level'', or ''deck'' are used in similar ways (i.e. "the 16th ''floor''"), but to refer to buildings it is more usual to speak of a "16-''storey'' building". The floor at ground or street level is called the "ground floor" (i.e. it needs no number; the floor below it is called "basement", and the floor above it is called "first") in many regions. However, in some regions, like the US, ''ground floor'' is synonymous with ''first floor'', leading to differing numberings of floors, depending on region – even between different national varieties of English.

The words ''storey'' and ''floor'' normally exclude levels of the building that are not covered by a roof, such as the terrace on the rooftops of many buildings. Nevertheless, a flat roof on a building ''is'' counted as a floor in other languages, for instance in Dutch, literally "roof-floor", simply counted one level up from the floor number that it covers.

A two-storey house or home extension is sometimes referred to as double-storey in the UK, while one storey is referred to as single-storey. Provided by Wikipedia