What are some synonyms and antonyms for "attic"?

Synonyms for attic include garret, which is traditional term for habitable attic, loft which is British English term for attic, storage attic, floored attic, finished attic, bonus room, walk-up attic, mansard when under mansard roof, and in some contexts belfry or cupola for tower top space. Related terms include crawl space and hayloft. Antonyms for attic include basement and cellar, which are lowest storage spaces in building opposite to attic which is highest, as well as ground floor, first floor, and lower level. While basement is direct architectural opposite being below house versus attic above, antonyms can also be conceptual like living room if attic is considered storage versus living space. In slang where attic means head or mind, antonym might be foot or lower body, but architecturally basement is clear antonym. So synonyms focus on upper storage spaces like garret and loft, while antonyms focus on lower spaces like basement and cellar.