1) Desk 2) Desk used for writing 3) Escritoire 4) Secretary 5) Writing table 1) Escritoire 
writing desk
Chest of drawers with a desk area concealed behind a false drawer-front. Instead of the angled fold-down bureau, the top 'drawer' pulls out and the front drops down to form a writing surface and reveals recessed pigeonhole compartments and small drawers behind. Secretaires were introduced during the late 17th to early 18th centuries.
(French) a small writing desk. ...
Chest of drawers with a desk area concealed behind a false drawer-front. Instead of the angled fold-down bureau, the top 'drawer' pulls out and the front drops down to form a writing surface and reveals recessed pigeonhole compartments and small drawers behind. Secretaires were introduced during the late 17th to early 18th centuries.
French term for a free standing writing desk with a drop down writing surface with shelves or drawers below; may also have a bookcase above.