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Requirement vs Compulsory - What's the difference?

requirement | compulsory |

As nouns the difference between requirement and compulsory

is that requirement is a necessity or prerequisite; something required or obligatory while compulsory is something that is compulsory or required.

As an adjective compulsory is

required; obligatory; mandatory.

requirement

English

(wikipedia requirement)

Noun

(en noun)
  • A necessity or prerequisite; something required or obligatory.
  • Something asked.
  • (engineering) A statement (in domain specific terms) which specifies a verifiable constraint on an implementation that it shall undeniably meet or (a)'' be deemed unacceptable, or ''(b)'' result in implementation failure, or ''(c) result in system failure.

    • Usage notes

    * Adjectives often used with "requirement": stringent, complex, reasonable, mandatory, important, financial, medical, educational, physical, chemical * Verbs often used with "requirement": meet, comply with, satisfy, fulfill, impose, waive, abolish, drop, add, remove, fail to meet, ignore, understand, state, specify, increase, reduce, change, modify

    Synonyms

    * (prerequisite) condition, prerequisite, necessity

    Derived terms

    * functional requirement * requirements engineering * requirements analysis

    External links

    *

    compulsory

    English

    Adjective

    (en adjective)
  • Required; obligatory; mandatory.
  • * 1827 , A. D. Jr., Edinburgh Medical and Surgical Journal , A. and C. Black, page 212:
    • They are entirely private concerns, established by individual teachers, and attendance upon them is no more compulsory than attendance on our dispensaries.
  • * 1996 , (Ugo Pagano), Democracy and Efficiency in the Economic Enterprise , page 73:
    • Some might agree that membership in the firm is perhaps more compulsory than membership in a municipality, but balk at applying the analogy to the nation.
  • * {{quote-magazine, date=2013-07-19, author=(Peter Wilby)
    • , volume=189, issue=6, page=30, magazine=(The Guardian Weekly) , title= Finland spreads word on schools , passage=Imagine a country where children do nothing but play until they start compulsory schooling at age seven. Then, without exception, they attend comprehensives until the age of 16. Charging school fees is illegal, and so is sorting pupils into ability groups by streaming or setting.}}
  • Having the power of compulsion; constraining.

    • Synonyms

    * mandatory

    Antonyms

    * (required) optional

    Noun

    (compulsories)
  • Something that is compulsory or required.
  • * {{quote-news, year=2008, date=March 22, author=The Associated Press, title=French Victory in Ice Dance, work=New York Times citation
    • , passage=Delobel and Schoenfelder failed to win the free dance, but they had built a big lead in the compulsories and the original dance. }}