essential vs requirement what difference

what is difference between essential and requirement

English

Alternative forms

  • essentiall (obsolete)

Etymology

From Late Latin essentiālis, from Latin essentia (being, essence).

Pronunciation

  • IPA(key): /ɪˈsɛn.ʃəl/, [əˈsɛn.tʃəl]
  • Hyphenation: es‧sen‧tial

Adjective

essential (comparative more essential, superlative most essential)

  1. Necessary.
    Synonyms: indispensable; see also Thesaurus:requisite
    Antonyms: accidental, accessorial, incidental, unnecessary, unneeded
  2. Very important; of high importance.
    Synonyms: crucial; see also Thesaurus:important
    Antonyms: unimportant; see also Thesaurus:insignificant
  3. (biology) Necessary for survival but not synthesized by the organism, thus needing to be ingested.
  4. Being in the basic form; showing its essence.
    Synonyms: see Thesaurus:intrinsic, Thesaurus:bare-bones
    Antonyms: adscititious; see also Thesaurus:extrinsic
  5. Really existing; existent.
    Synonyms: see Thesaurus:existent
    Antonyms: see Thesaurus:inexistent
  6. (geometry) Such that each complementary region is irreducible, the boundary of each complementary region is incompressible by disks and monogons in the complementary region, and no leaf is a sphere or a torus bounding a solid torus in the manifold.
    (Can we add an example for this sense?)
  7. (medicine) Idiopathic.
  8. Having the nature of essence; not physical.

Antonyms

  • inessential, unessential, non-essential, nonessential

Derived terms

Translations

Noun

essential (plural essentials)

  1. A necessary ingredient.
  2. A fundamental ingredient.
    (Can we add an example for this sense?)

Related terms

  • essence

Translations

Further reading

  • essential on Wikipedia.Wikipedia

Anagrams

  • siletanes


English

Etymology

require +‎ -ment

Pronunciation

  • (UK) IPA(key): /ɹɪˈkwʌɪəm(ə)nt/
  • (US) IPA(key): /ɹɪˈkwaɪɹmənt/, /ɹɪˈkwɑɹmənt/

Noun

requirement (plural requirements)

  1. A necessity or prerequisite; something required or obligatory. Its adpositions are generally of in relation to who or what has given it, on in relation to whom or what it is given to, and for in relation to what is required.
    There was a requirement of the government on citizens for paying taxes.
  2. Something asked.
  3. (engineering, computing) 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

Hyponyms

  • functional requirement
  • quality requirement

Related terms

  • requirements engineering
  • requirements analysis

Translations

Further reading

  • requirement at OneLook Dictionary Search

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