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.
AAA |. An economic measure of the difference between the actual output of an economy and the output it could achieve when it is most efficient, or at full capacity.There are two types of output gaps: positive and negative. A positive output gap occurs when actual output is more than the full-capacity output.Negative output gap occurs when actual output is less than full-capacity output.AA |. An economic measure of the difference between the actual output of an economy and the output it could achieve when it is most efficient, or at full capacity.