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Decay vs Decrease - What's the difference?

decay | decrease | Related terms |

In intransitive terms the difference between decay and decrease

is that decay is to deteriorate, to get worse, to lose strength or health, to decline in quality while decrease is of a quantity, to become smaller.

In transitive terms the difference between decay and decrease

is that decay is to cause to rot or deteriorate while decrease is to make (a quantity) smaller.

decay

English

(wikipedia decay)

Noun

  • The process or result of being gradually decomposed.
  • * 1895 , H. G. Wells, The Time Machine Chapter X
  • I fancied at first the stuff was paraffin wax, and smashed the jar accordingly. But the odor of camphor was unmistakable. It struck me as singularly odd, that among the universal decay , this volatile substance had chanced to survive, perhaps through many thousand years.
  • A deterioration of condition.
  • Derived terms

    * bacterial decay * decayability * decayable * decayer * orbital decay * particle decay * radioactive decay

    Verb

    (en verb)
  • To deteriorate, to get worse, to lose strength or health, to decline in quality.
  • The pair loved to take pictures in the decaying hospital on forty-third street.
  • # (intransitive, electronics, of storage media or the data on them) To undergo , that is, gradual degradation.
  • # (intransitive, computing, of software) To undergo , that is, to fail to be updated in a changing environment,so as to eventually become legacy or obsolete.
  • # (intransitive, physics, of a satellite's orbit) To undergo prolonged reduction in altitude (above the orbited body).
  • 2009 , Francis Lyall, Paul B. Larsen, Space Law: A Treatise , page 120:
  • Damaged on lift-off, Skylab was left in orbit until its orbit decayed .
  • (of organic material) To rot, to go bad.
  • The cat's body decayed rapidly.
  • (intransitive, transitive, physics, chemistry, of an unstable atom) To change by undergoing fission, by emitting radiation, or by capturing or losing one or more electrons.
  • * 2005 , Encyclopedia of Earth Science (edited by Timothy M. Kusky; ISBN 0-8160-4973-4), page 349:
  • Uranium decays to radium through a long series of steps with a cumulative half-life of 4.4 billion years.
  • (intransitive, transitive, physics, of a quantum system) To undergo , that is, to relax to a less excited state, usually by emitting a photon or phonon.
  • (aviation)
  • To cause to rot or deteriorate.
  • The extreme humidity decayed the wooden sculptures in the museum's collection in a matter of years.
  • * Shakespeare
  • Infirmity, that decays the wise.

    decrease

    English

    Verb

    (decreas)
  • Of a quantity, to become smaller.
  • To make (a quantity) smaller.
  • Synonyms

    * (become smaller) drop, fall, go down, plummet (rapidly), plunge (rapidly), reduce, shrink, sink * (make smaller) abate, cut, decrement, lower, reduce

    Antonyms

    * (become larger) go up, grow, increase, rise, soar (rapidly), shoot up (rapidly) * (make larger) increase, increment, raise, up (informal)

    Noun

    (en noun)
  • An amount by which a quantity is decreased.
  • (knitting) A reduction in the number of stitches, usually accomplished by suspending the stitch to be decreased from another existing stitch or by knitting it together with another stitch. See .
  • Synonyms

    * (amount by which a quantity is decreased) cut, decrement, drop, fall, loss, lowering, reduction, shrinkage

    Antonyms

    * (amount by which a quantity is decreased) gain, increase, increment, raise , rise