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Adequacy vs Validity - What's the difference?

adequacy | validity |

As nouns the difference between adequacy and validity

is that adequacy is the quality of being sufficient, adequate or able to meet the needs while validity is the state of being valid, authentic or genuine.

adequacy

English

Noun

(adequacies)
  • The quality of being sufficient, adequate or able to meet the needs.
    • His zeal is, of course, unquestionable; his adequacy, however, I doubt.

    validity

    English

    Noun

    (wikipedia validity)
  • The state of being valid, authentic or genuine.
  • Having legal force.
  • A quality of a measurement indicating the degree to which the measure reflects the underlying construct, that is, whether it measures what it purports to measure (see reliability).