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Noun authentication has 2 senses
  1. authentication, hallmark, assay-mark - a mark on an article of trade to indicate its origin and authenticity
    --1 is a kind of marker, marking, mark
    Derived form: verb authenticate1
  2. authentication, certification - validating the authenticity of something or someone
    --2 is a kind of validation, proof, substantiation
    Derived form: verb authenticate1
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