Calm vs. Tranquil: What's the Difference?

Calm and Tranquil Definitions
Calm
Nearly or completely motionless; undisturbed
The calm surface of the lake.
Tranquil
Free from commotion or disturbance
A tranquil lake.
A tranquil evening.
Calm
Not excited or agitated; composed
The president was calm throughout the global crisis.
Tranquil
Free from anxiety, tension, or restlessness; composed
A tranquil mind.
Calm
An absence or cessation of motion; stillness.
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Tranquil
Steady; even
A tranquil flame.
Calm
A condition of no wind or a wind with a speed of less than 1 knot (1.15 miles per hour; 1.9 kilometers per hour), according to the Beaufort scale.
Tranquil
Free from emotional or mental disturbance.
Calm
Tranquility or serenity
"an unaccustomed reticence that I took to be the calm that follows rage" (Jeanne Marie Laskas).
Tranquil
Calm; without motion or sound.
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Calm
To make or become calm or quiet
A warm bath will calm you. After the storm, the air calmed.
Tranquil
Quiet; calm; undisturbed; peaceful; not agitated; as, the atmosphere is tranquil; the condition of the country is tranquil.
A style clear, tranquil, easy to follow.
Calm
(of a person) Peaceful, quiet, especially free from anger and anxiety.
Tranquil
Characterized by absence of emotional agitation;
Calm acceptance of the inevitable
Remained serene in the midst of turbulence
A serene expression on her face
She became more tranquil
Tranquil life in the country
Calm
(of a place or situation) Free of noise and disturbance.
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Tranquil
Free from disturbance;
A ribbon of sand between the angry sea and the placid bay
The quiet waters of a lagoon
A lake of tranquil blue water reflecting a tranquil blue sky
A smooth channel crossing
Scarcely a ripple on the still water
Unruffled water
Calm
(of water) with few or no waves on the surface; not rippled.
Calm
Without wind or storm.
Calm
(in a person) The state of being calm; peacefulness; absence of worry, anger, fear or other strong negative emotion.
Calm
(in a place or situation) The state of being calm; absence of noise and disturbance.
Calm
A period of time without wind.
Calm
(transitive) To make calm.
To calm a crying baby
To calm the passions
Calm
(intransitive) To become calm.
Calm
Freedom from motion, agitation, or disturbance; a cessation or absence of that which causes motion or disturbance, as of winds or waves; tranquility; stillness; quiet; serenity.
The wind ceased, and there was a great calm.
A calm before a storm is commonly a peace of a man's own making.
Calm
To make calm; to render still or quiet, as elements; as, to calm the winds.
To calm the tempest raised by Eolus.
Calm
To deliver from agitation or excitement; to still or soothe, as the mind or passions.
Passions which seem somewhat calmed.
Calm
Not stormy; without motion, as of winds or waves; still; quiet; serene; undisturbed.
Now all is calm, and fresh, and still.
Calm
Undisturbed by passion or emotion; not agitated or excited; tranquil; quiet in act or speech.
Such calm old age as conscience pureAnd self-commanding hearts ensure.
Calm
Steadiness of mind under stress;
He accepted their problems with composure and she with equanimity
Calm
Make calm or still;
Quiet the dragons of worry and fear
Calm
Make steady;
Steady yourself
Calm
Become quiet or calm, especially after a state of agitation;
After the fight both men need to cool off.
It took a while after the baby was born for things to settle down again.
Calm
Cause to be calm or quiet as by administering a sedative to;
The patient must be sedated before the operation
Calm
Not agitated; without losing self-possession;
Spoke in a calm voice
Remained calm throughout the uproar
Calm
Characterized by absence of emotional agitation;
Calm acceptance of the inevitable
Remained serene in the midst of turbulence
A serene expression on her face
She became more tranquil
Tranquil life in the country
Calm
(of weather) free from storm or wind;
Calm seas
Calm
Marked by freedom from agitation or excitement;
The rioters gradually became calm and slowly dispersed