Furniture is the mass noun for the movable objects ('mobile' in Latin languages) intended to support various human activities such as seating and sleeping in beds, to hold objects at a convenient height for work using horizontal surfaces above the ground, or to store things.
a piece of furniture with a writing surface and usually drawers or other compartments
A desk is a furniture form and a class of table often used in a work or office setting for reading or writing on or using a computer. Desks often have one or more drawers to store office supplies and papers.
A counter in a hotel, bank, or airport at which a customer may check in or obtain information
A piece of furniture with a flat or sloped surface and typically with drawers, at which one can read, write, or do other work
A position in an orchestra at which two players share a music stand
A table, frame, or case, usually with sloping top, but often with flat top, for the use writers and readers.
Oak desk
Designed and built oak desk with 2 file drawers and pencil drawer on each side and a pencil drawer in the center. Fronts on file drawers are raised panel.
Desk
The old oak desk George is refinishing will be a changing table in the nursery.