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Somnolence vs Lethargy - What's the difference?

somnolence | lethargy |

As nouns the difference between somnolence and lethargy

is that somnolence is a state of drowsiness or sleepiness while lethargy is a condition characterized by extreme fatigue or drowsiness, or prolonged sleep patterns.

somnolence

Noun

(-)
  • a state of drowsiness or sleepiness
  • Synonyms

    * hypersomnia

    lethargy

    English

    Noun

  • (pathology) A condition characterized by extreme fatigue or drowsiness, or prolonged sleep patterns.
  • * c. 1599 , (William Shakespeare), King Henry IV, Part 2 :
  • This Apoplexie is (as I take it) a kind of Lethargie , a sleeping of the blood, a horson Tingling.
  • * 2003 , Amanda Ripley, "At Last, the Pill for Men", Time , 20 Oct 2003:
  • So in order to avoid unpleasant side effects like lethargy and sexual dysfunction, most recent trials also gave men testosterone supplements.
  • A state of extreme torpor or apathy, especially with lack of emotion or interest; loosely, sluggishness, laziness.
  • * Atterbury
  • Europe lay then under a deep lethargy .
  • * 1995 , Bruce W Nelan, "Crime and Punishment", Time , 20 Mar 1995:
  • Yakovlev, one of the architects of the reforms put in place by Mikhail Gorbachev, says he too is "amazed" at the government's lethargy .
  • * 2008 , Nick Fletcher, The Guardian , 9 May 2008:
  • The increase in mining stocks helped the FTSE 100 shake off some earlier lethargy and close 9.8 points higher at 6270.8, despite the disappointment of unchanged UK interest rates.