"Flat houses" can be described using a variety of synonyms. These include "apartments", "flats", "condominiums", "units", and "townhouses". Each of these synonyms refers to a type of housing where residents live in individual sections within a larger building or complex. Apartments, flats, and condominiums are typically rented or owned by individuals, while townhouses may be owned by an individual but share walls with neighboring units. Regardless of the terminology used, the concept of flat houses remains the same: they provide an efficient and affordable housing solution for urban areas where space is limited.