A condominium (aka condo) is basically an apartment owned by the occupant, in a setting with several dozen/several hundred other condos. The owner is generally said to own everything from the interior paint in. Ownership includes access to common areas such as swimming pools, clubhouses, and so forth, and there is generally a monthly fee for upkeep of the common areas. A subset of the condo is the townhouse, which has more than one floor.