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Lighthouse vs Undefined - What's the difference?

lighthouse | undefined |

As a noun lighthouse

is a building, usually a tower, containing a light to warn or guide ships.

As an adjective undefined is

lacking a definition or value.

lighthouse

English

(wikipedia lighthouse)

Noun

(en noun)
  • A building, usually a tower, containing a light to warn or guide ships.

    • Synonyms

    *

    Derived terms

    * lighthouse coffeepot * lighthouse keeper * lighthouse tube

    See also

    * beacon English words with consonant pseudo-digraphs

    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