four-story

The compound adjective "four-story" is a transparent numerical descriptor formed from the cardinal number "four" and the noun "story," denoting a floor of a building. The word "four" descends from the Proto-Indo-European root kʷetwóres, which gave rise to the number across many Indo-European languages, including Latin quattuor. The term "story" has a more circuitous origin; it derives from Latin historia (history, account), which entered medieval architectural terminology to refer to a tier of windows decorated with narrative scenes. Over time, the association with the decorative narrative faded, and "story" became a standard term for a building's floor level. Thus, the modern compound logically combines an ancient numeral with a semantically shifted architectural term to precisely describe a structure's vertical scale.

Structure: four (number) + story (level) - four: From Old English fēower, of Proto-Germanic origin; related to Dutch vier and German vier, from an Indo-European root shared by Latin quattuor and Greek tessares. Functions as a numerical quantifier. - story: From Middle English storie, from Anglo-Latin historia (meaning a tier of painted windows or sculpture on a building), a specialized use of Latin historia (meaning history, tale). The sense evolved from a narrative depicted on a building facade to the floor level itself. Functions as the noun being quantified.