1. (Animals) any aquatic bird, such as Podiceps cristatus (great crested grebe), of the order Podicipediformes, similar to the divers but with lobate rather than webbed toes and a vestigial tail. [C18: from French grebe, grÃ¨be of unknown]. originrebe. n. Any of various swimming and diving birds of the family Podicipedidae, having a pointed bill and lobed, fleshy membranes along each toe. [French.
Popular Answers. 1  Productivity = Output / Input. Efficiency = Doing things right. 2  Productivity refers to the conversion level of inputs into outputs. A process that can produce more output using less inputs is more proactive. Efficiency in the economic sense mean that things should be done in an economic way considering that resources are scarce.
Employee productivity (sometimes referred to as workforce productivity) is an assessment of the efficiency of a worker or group of workers. Productivity may be evaluated in terms of the output of an employee in a specific period of time. Typically, the productivity of a given worker will be assessed relative to an average for employees doing similar work.