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Keepsake vs Undefined - What's the difference?

keepsake | undefined |

As a noun keepsake

is some object given by a person and retained in memory of something or someone; something kept for sentimental or nostalgic reasons.

As an adjective undefined is

lacking a definition or value.

keepsake

English

Noun

  • Some object given by a person and retained in memory of something or someone; something kept for sentimental or nostalgic reasons.
    • She gave him a lock of hair as a keepsake of their time together.
  • (historical) Specifically, a type of literary album popular in the nineteenth-century, containing scraps of poetry and prose, and engravings.

    • Synonyms

    * memento * souvenir * (plural) memorabilia

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined