different between attested vs certified

English

attested

attested (comparative more attested, superlative most attested)

Proven; shown to be true with evidence
Supported with testimony
Certified as good, correct, or pure
- 1599, William Shakespeare, Twelfth Night, First Folio edition, Act V, Scene 1:
  A Contract of eternall bond of loue,
  Confirm'd by mutuall ioynder of your hands,
  Atte?ted by the holy clo?e of lippes,
(linguistics) Of words or languages, proven to have existed by records.
- A term should be included if it's likely that someone would run across it and want to know what it means. This in turn leads to the somewhat more formal guideline of including a term if it is attested and idiomatic.
The word slæpwerig (sleep-weary) is attested in the Exeter Book in the form slæpwerigne.

certified

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