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Noun deficiency has 2 senses
lack, deficiency, want - the state of needing something that is absent or unavailable; "there is a serious lack of insight into the problem"; "water is the critical deficiency in desert regions"; "for want of a nail the shoe was lost"--1 is a kind of need, demand
 --1 has particulars:
insufficiency, inadequacy, deficiency - lack of an adequate quantity or number; "the inadequacy of unemployment benefits"--2 is a kind of amount
 --2 has particulars:
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