What is the space between two adjacent floors in a building referred to as?

The term used to describe the space between two adjacent floors in a building is "story." In architectural terminology, a story refers to a continuous level or floor of the building, which is separated by ceilings and floors from the levels above and below. This concept is essential for understanding the vertical organization of a building, as it indicates how many levels are present and is commonly used when discussing building height and design.

While "loft" typically refers to an open space or area under the roof of a building that has been converted for use, and "space" is a more general term that does not specifically denote a level in a structure, "story" specifically captures the idea of constructed levels stacked within the overall architecture of a building. The confusion between "story" and "storey" often arises, but both terms essentially convey the same idea in different English dialects, with "story" being more common in American English and "storey" more commonly used in British English.

In the context of this question, the focus is on the term that accurately defines the architectural element representing the space between floors, making "story" the correct choice.