different between starvation vs deficiency

English

starve +? -ation

starvation (countable and uncountable, plural starvations)

A condition of severe suffering due to a lack of nutrition.
- 1918, Edgar Rice Burroughs, The Land That Time Forgot Chapter IV
  "We haven't one chance for life in a hundred thousand if we don't find food and water upon Caprona. This water coming out of the cliff is not salt; but neither is it fit to drink, though each of us has drunk. It is fair to assume that inland the river is fed by pure streams, that there are fruits and herbs and game. Shall we lie out here and die of thirst and starvation with a land of plenty possibly only a few hundred yards away? We have the means for navigating a subterranean river. Are we too cowardly to utilize this means?"
(figuratively) Severe shortage of resources.
- 2002, Allan N. Packer, Configuring and Tuning Databases on the Solaris Platform (page 362)
  However, if the ASE application is paged out because of memory starvation, the entire process is blocked and no useful work can be done until the required pages are brought into memory.

From deficit +? -ency. Compare Latin d?ficientia.

deficiency (countable and uncountable, plural deficiencies)

(uncountable) Inadequacy or incompleteness.
(countable) An insufficiency, especially of something essential to health.
(geometry) The amount by which the number of double points on a curve is short of the maximum for curves of the same degree.
(geometry) The codimension of a linear system in the corresponding complete linear system.

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