Watershed vs Null - What's the difference?

watershed | null |


As nouns the difference between watershed and null

is that watershed is (hydrology) the topographical boundary dividing two adjacent catchment basins, such as a ridge or a crest while null is a non-existent or empty value or set of values.

As an adjective null is

having no validity, "null and void".

As a verb null is

to nullify; to annul.

watershed

English

Noun

(wikipedia watershed) (en noun)
  • (hydrology) The topographical boundary dividing two adjacent catchment basins, such as a ridge or a crest.
  • (US) A region of land within which water flows down into a specified body, such as a river, lake, sea, or ocean; a drainage basin.
  • A critical point marking a change in course or development.
  • (Canada, British) The time after which material of more adult nature (violence, swear words, sex) may be broadcast on television or radio, either one laid down or one contrived (e.g. when children are not watching...)
  • Synonyms

    * (boundary between two adjacent catchment basins) water parting, drainage divide, water divide, divide * (drainage basin) catchment basin, catchment, catchment area, drainage area, river basin, water basin * (time after which adult material may be broadcast) safe harbor (US) * (critical point marking a change in course or development) turning point

    Derived terms

    * postwatershed * prewatershed * watershedding

    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 ----