Difference between Lethargic and Languid

LETHARGIC vs LANGUID: NOUN

Of, causing, or characterized by lethargy.
Pertaining to, affected with, or resembling, lethargy; morbidly drowsy; dull; heavy.
Sluggish, slow
Indifferent, apathetic
Deficient in alertness or activity

Lacking spirit or liveliness
Lacking energy or disinclined to exert effort; listless.
Slow-moving or weak in force.
Characterized by or conducive to indolence or inactivity.
Drooping or flagging from exhaustion; indisposed to exertion; without animation; weak; weary; heavy; dull.
Slow in progress; tardy.
Promoting or indicating weakness or heaviness.
Showing little or no vitality or animation.

Affected with lethargy; morbidly sluggish or drowsy; dull; torpid.
Marked by lethargy or languor; manifesting sluggishness or apathy: as, lethargic movements; a lethargic government.
Producing lethargy; causing languor or apathy; stupefying.

Supine, spiritless, torpid, slow.
Synonyms Faint, weary, exhausted.
Heavy; dull; dragging; wanting spirit or animation; listless; apathetic.
Hence, in general
Drooping or flagging from weakness, fatigue, or lack of energy; indisposed to exertion; sluggish; relaxed: as, languid movements; languid breathing.

Lifeless, Unresponsive, Apathetic, Sluggish, Unergetic, Dreamy, Foggy, Logy, Languorous, Stuporous, Dazed, Languid, Groggy, Lackadaisical, Listless

Serene, Morose, Melancholic, Lugubrious, Sultry, Wistful, Melancholy, Pensive, Leisurely, Unhurried, Unergetic, Lackadaisical, Lethargic, Dreamy, Languorous

Lifeless, Unresponsive, Apathetic, Sluggish, Unergetic, Dreamy, Foggy, Logy, Languorous, Stuporous, Dazed, Languid, Groggy, Lackadaisical, Listless

Serene, Morose, Melancholic, Lugubrious, Sultry, Wistful, Melancholy, Pensive, Leisurely, Unhurried, Unergetic, Lackadaisical, Lethargic, Dreamy, Languorous

You feel weakness or lethargic in performing routine work.
Besides, they may sleep long hours and become lethargic.
Once vibrant is Suddenly Lethargic and lay around.
It helps you feel energized and less lethargic.
On arrival the patient is conscious but lethargic.
She stopped eating, drinking, and was very lethargic.
It is common to feel tired or lethargic.
Often, I find myself feeling lethargic about writing.
She was lethargic, aphasic, and had labored breathing.
At first I thought maybe he was just lethargic from his medications but this was beyond lethargic.

When not on campaign, he fluctuated between frenziedactivity and languid repose.
He spoke with a languid but none the less teasing derision.
Nature seemed as though languid and weighed down by some foreboding.
We lay for some time in this sweet languid enjoyment.
The aifirmative was languid but indisputable: TUE STOKY OF IRELAND.
Vera too languid and dreamy: I loved Miranda Richardson, though.
In fact, a languid exploration of lips and tongues.
Make your hammam visit a leisurely, languid one.
He joins David Marr for a languid conversation.
Small tidal and current variations suggest languid qualities.