the.com/condo

means A privately owned unit within a larger building or complex, where you own the interior but share ownership of common areas under collective rules.

from A clipped form of 'condominium,' from Latin 'con-' (together) plus 'dominium' (dominion, ownership) — literally 'joint rule' or 'shared ownership.' The term originally described joint sovereignty between governments before 20th-century real estate borrowed it to describe joint ownership of a building's shared spaces. The shortened 'condo' took off in American English as the housing model spread in the mid-1900s.