Concurrent vs Concomitant - What's the difference?

concurrent | concomitant |

As adjectives the difference between concurrent and concomitant

is that concurrent is happening at the same time; simultaneous while concomitant is accompanying; conjoined; attending; concurrent.

As nouns the difference between concurrent and concomitant

is that concurrent is one who, or that which, concurs; a joint or contributory cause while concomitant is something happening or existing at the same time.

Other Comparisons: What's the difference?



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(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


    (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) ----




  • Accompanying; conjoined; attending; concurrent.
  • * (John Locke)
  • It has pleased our wise Creator to annex to several objects, as also to several of our thoughts, a concomitant pleasure.
  • * 1970 , Alvin Toffler, Future Shock'', ''Bantam Books , pg. 41:
  • The new technology on which super-industrialism is based, much of it blue-printed in American research laboratories, brings with it an inevitable acceleration of change in society and a concomitant speed-up of the pace of individual life as well.


    * (following as a consequence) accompanying, adjoining, attendant, incidental


    (en noun)
  • Something happening or existing at the same time.
  • * 1970 , , Bantam Books , pg.93:
  • The declining commitment to place is thus related not to mobility per se, but to a concomitant of mobility- the shorter duration of place relationships.
  • * 1900 , Sigmund Freud, The Interpretation of Dreams'', ''Avon Books , (translated by James Strachey) pg. 301:
  • It is also instructive to consider the relation of these dreams to anxiety dreams. In the dreams we have been discussing, a repressed wish has found a means of evading censorship—and the distortion which censorship involves. The invariable concomitant is that painful feelings are experienced in the dream.
  • An invariant homogeneous polynomial in the coefficients of a form, a covariant variable, and a contravariant variable.
  • Synonyms

    * (a concomitant event or situation) accompaniment, co-occurrence