A split-level house is a unique style of architecture that has grown in popularity over the years. It's defined by the different levels found within the home, with each level typically having its own specific purpose. However, there are a variety of synonyms that can be used to describe split-level homes, including bi-level, tri-level, multi-level, and sunken living. Bi-level homes are the most recognizable, often featuring a front door that opens to a landing that leads either upstairs or downstairs. Tri-level homes, on the other hand, have three levels with staggered floors, while multi-level homes might have four or more. Lastly, a sunken living room is a style within a split-level home where the living room is a few steps down from the main level.