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Concurrent vs Simultaneously - What's the difference?

concurrent | simultaneously |

As an adjective concurrent

is happening at the same time; simultaneous.

As a noun concurrent

is one who, or that which, concurs; a joint or contributory cause.

As an adverb simultaneously is

occurring at the same time.

concurrent

English

of building models [http://en.wikiversity.org/wiki/Concurrent_testings].

Adjective

(en adjective)
  • Happening at the same time; simultaneous.
  • * Tyndall
    • changes concurrent with the visual changes in the eye
    (Francis Bacon)
  • Belonging to the same period; contemporary.
  • Acting in conjunction; agreeing in the same act or opinion; contibuting to the same event of effect.
  • * Sir J. Davies
    • I join with these laws the personal presence of the king's son, as a concurrent cause of this reformation.
  • * Bishop Warburton
    • the concurrent testimony of antiquity
  • Joint and equal in authority; taking cognizance of similar questions; operating on the same objects.
    • the concurrent jurisdiction of courts
  • (geometry) Meeting in one point.
  • Running alongside one another on parallel courses; moving together in space.
  • (computing) Involving more than one thread of computation.

    • Coordinate terms

    * leading, lagging

    Derived terms

    * concurrent indicator * concurrently

    Noun

    (en noun)
  • One who, or that which, concurs; a joint or contributory cause.
  • * Dr. H. More
    • To all affairs of importance there are three necessary concurrents time, industry, and faculties.
  • One pursuing the same course, or seeking the same objects; hence, a rival; an opponent.
  • * Holland
    • Menander had no concurrent in his time that came near unto him.
  • One of the supernumerary days of the year over fifty-two complete weeks; so called because they concur with the solar cycle, the course of which they follow.
    • (Webster 1913) ----

    simultaneously

    English

    Adverb

    (-)
  • Occurring at the same time.
  • *
    • The hens woke up squawking with terror because they had all dreamed simultaneously of hearing a gun go off in the distance.
  • *{{quote-magazine, date=2013-07-19, author=(Timothy Garton Ash)
    • , volume=189, issue=6, page=18, magazine=(The Guardian Weekly) , title= Where Dr Pangloss meets Machiavelli , passage=Hidden behind thickets of acronyms and gorse bushes of detail, a new great game is under way across the globe. Some call it geoeconomics, but it's geopolitics too. The current power play consists of an extraordinary range of countries simultaneously sitting down to negotiate big free trade and investment agreements.}}

    Related terms

    * simultaneity