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Occurrence vs Undefined - What's the difference?

occurrence | undefined |

As a noun occurrence

is actual instance where a situation arises.

As an adjective undefined is

lacking a definition or value.

occurrence

English

Noun

(en noun)
  • Actual instance where a situation arises.
  • *{{quote-magazine, date=2013-06-29, volume=407, issue=8842, page=29, magazine=(The Economist)
  • , title= Unspontaneous combustion , passage=Since the mid-1980s, when Indonesia first began to clear its bountiful forests on an industrial scale in favour of lucrative palm-oil plantations, “haze” has become an almost annual occurrence in South-East Asia. The cheapest way to clear logged woodland is to burn it, producing an acrid cloud of foul white smoke that, carried by the wind, can cover hundreds, or even thousands, of square miles.}}

    Usage notes

    * This word is often misspelled occurence'', ''occurrance'' or ''occurance .

    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