Somnolence vs. Lethargy

Somnolence and Lethargy Definitions
Somnolence
A state of drowsiness; sleepiness.
Lethargy
A lack of energy or vigor; sluggishness.
Somnolence
A state of drowsiness or sleepiness.
Lethargy
A lack of interest or enthusiasm; apathy
Held a pep rally to shake the students out of their lethargy.
Somnolence
Sleepiness; drowsiness; inclination to sleep.
Lethargy
(Medicine) An abnormal state of drowsiness, as caused by disease or drugs.
ADVERTISEMENT
Somnolence
A very sleepy state;
Sleepiness causes many driving accidents
Lethargy
A state of extreme torpor or apathy, especially with lack of emotion, energy or enthusiasm; (loosely) sluggishness, laziness.
Lethargy
(pathology) A condition characterized by extreme fatigue or drowsiness, deep unresponsiveness, or prolonged sleep patterns.
Lethargy
Morbid drowsiness; continued or profound sleep, from which a person can scarcely be awaked.
Lethargy
A state of inaction or indifference.
Europe lay then under a deep lethargy.
Lethargy
To lethargize.
ADVERTISEMENT
Lethargy
A state of comatose torpor (as found in sleeping sickness)
Lethargy
Weakness characterized by a lack of vitality or energy
Lethargy
Inactivity; showing an unusual lack of energy