GROUP › a group of people who are responsible for a particular part of an organization: an anti-terrorist unit
MEASURE › a measure used to express an amount or quantity: The kilogram is a unit of weight.
SINGLE › a single, complete thing that may be part of a larger thing: a French course book with ten units
FURNITURE › a piece of furniture that fits together with other pieces: kitchen units
MACHINE › a small machine, or part of a machine, that has a particular purpose: a computer's central processing unit
BUILDING › a single apartment, office, etc in a larger building