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Roof vs Undefined - What's the difference?

roof | undefined |

As a proper noun roof

is (astronomy) a chinese constellation located near aquarius and pegasus, one of the 28 lunar mansions and part of the larger black turtle.

As an adjective undefined is

lacking a definition or value.

roof

English

(wikipedia roof)

Noun

(en-noun)
  • The cover at the top of a building.
  • * , chapter=1
    • , title= Mr. Pratt's Patients, chapter=1 , passage=Pretty soon I struck into a sort of path […]. It twisted and turned,
  • * 1931 , Robert L. May, Rudolph'', ''The Red-Nosed Reindeer , Montgomery Ward (publisher), draft:
    • The very first sound that you’ll hear on the roof / (Provided there’s fog) will be Rudolph’s small hoof.
  • The upper part of a cavity.
  • * {{quote-news, year=2011, date=October 1, author=John Sinnott, work=BBC Sport
    • , title= Aston Villa 2-0 Wigan , passage=As Bent pulled away to the far post, Agbonlahor opted to go it alone, motoring past Gary Caldwell before unleashing a shot into the roof of the net.}}
  • (mining) The surface or bed of rock immediately overlying a bed of coal or a flat vein.

    • Usage notes

    * The plural rooves'' is uncommon and is considered by some to be incorrect, though it is parallel to more common plurals like ''hooves'' and ''staves. * In referring to the top of a building, refers both to the object itself (“the roof was blown off in the tornado”) and to the location of being on the roof (“it can be dangerous to go on the roof to fix the antenna”). In the later sense (of “location”) it is often used attributively, largely interchangeably with rooftop.

    Synonyms

    * (cover at top of building) , thatch * (in a cavity)

    Derived terms

    * barrel roof * built-up roof * burn the roof * coach roof * hip roof * hit the roof * mansard roof * raise the roof * rooftop * rooftree * shed roof * single-ply roof * steep-slope roof * sunroof * through the roof

    Verb

    (en verb)
  • To cover or furnish with a roof.

    • Derived terms

    * roofer * unroof

    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