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Rust vs Null - What's the difference?

rust | null |

As a verb rust

is to grow.

As a noun null is

zero, nil; the cardinal number before einn.

rust

English

(wikipedia rust)

Noun

(en noun)
  • The deteriorated state of iron or steel as a result of moisture and oxidation.
  • The rust on my bicycle chain made cycling to work very dangerous.
  • A similar substance based on another metal (usually with qualification, such as "copper rust").
  • aerugo. Green or blue-green copper rust ; verdigris. (American Heritage Dictionary, 1973)
  • A reddish-brown color.
  • A disease of plants caused by a reddish-brown fungus.
  • (-)

    Derived terms

    * cedar-apple rust * coffee rust * Rust Belt * rust bucket * rust fungus * rust mite * rustproof * rusty * stem rust * wheat rust * white pine blister rust * white rust

    Verb

    (en verb)
  • to oxidize, especially of iron or steel.
  • The patio furniture had rusted in the wind-driven spray.
  • to cause to oxidize.
  • The wind-driven spray had thoroughly rusted the patio furniture.
  • To be affected with the parasitic fungus called rust.
  • (figuratively) To degenerate in idleness; to become dull or impaired by inaction.
  • * Dryden
  • Must I rust in Egypt? never more / Appear in arms, and be the chief of Greece?

    Synonyms

    * oxidise / oxidize * corrode

    See also

    * aeciospore * ferric oxide * ferruginous * rouille * rubiginous *

    Anagrams

    * * ----

    null

    English

    Noun

    (en noun)
  • A non-existent or empty value or set of values.
  • Zero]] quantity of [[expression, expressions; nothing.
  • (Francis Bacon)
  • Something that has no force or meaning.
  • (computing) the ASCII or Unicode character (), represented by a zero value, that indicates no character and is sometimes used as a string terminator.
  • (computing) the attribute of an entity that has no valid value.
  • Since no date of birth was entered for the patient, his age is null .
  • One of the beads in nulled work.
  • (statistics) null hypothesis
  • Adjective

    (en adjective)
  • Having no validity, "null and void"
  • insignificant
  • * 1924 , Marcel Proust, Within a Budding Grove :
  • In proportion as we descend the social scale our snobbishness fastens on to mere nothings which are perhaps no more null than the distinctions observed by the aristocracy, but, being more obscure, more peculiar to the individual, take us more by surprise.
  • absent or non-existent
  • (mathematics) of the null set
  • (mathematics) of or comprising a value of precisely zero
  • (genetics, of a mutation) causing a complete loss of gene function, amorphic.
  • Derived terms

    * nullity

    Verb

    (en verb)
  • to nullify; to annul
  • (Milton)

    See also

    * nil ----