In addition to the words I mentioned above you should know; New York State Disclosure Form for Landlords and Tenants, which you can find at http://www.dos.state.ny.us/lcns/legamd.htm,
the Lead Paint Disclosure form which you can find at http://www.epa.gov/lead/pubs/lesr_eng.pdf,
and the following: Studio
One or two rooms with combined living and sleeping areas.
A one or two room apartment with a separate alcove which can be used as a sleeping or dining area. Alcoves usually adjoin the living room space of the apartment, are generally less than 100 square feet and can sometimes be walled off to create an additional bedroom.
An apartment with an alcove off of the living room has been converted into a bedroom or dining room. For example, a Junior 4 would be a three room apartment, (living room, kitchen and bedroom), which has four rooms by using the alcove space to create an additional room.
This is typically an apartment with an alcove adjacent to the living room that can be used to create another room by using this "flexible" space to "convert" the apartment from, for example, a one bedroom to a two bedroom.
The word "classic" is usually followed by a number indicating the number of rooms in an apartment. It is usually associated with pre-war apartments that meet criteria for numbers of rooms and design. However, a "classic" can exist in a post-war building assuming it follows the same guidelines. As an example, a "classic six " is comprised of a living room, dining room, kitchen, two bedrooms and a maid's room. A "classic seven" is comprised of a living room, dining room, kitchen, three bedrooms and a maid's room.
This is an additional space created in apartments with very high ceilings. The loft area is constructed above the living area, accessed via a staircase or ladder and used for extra storage, sleeping or living space (e.g. an office.)
In Manhattan this refers to an apartment with two floors or on two levels and not to two apartment units.