Grin vs. Smile — What's the Difference?

Difference Between Grin and Smile
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Definitions
Grin➦
Smile broadly
Dennis appeared, grinning cheerfully
Smile➦
A smile is formed primarily by flexing the muscles at the sides of the mouth. Some smiles include a contraction of the muscles at the corner of the eyes, an action known as a Duchenne smile.
Grin➦
A broad smile
A silly grin
Smile➦
A facial expression characterized by an upward curving of the corners of the mouth and indicating pleasure, amusement, or derision.
Grin➦
To smile broadly, often baring the teeth, as in amusement, glee, embarrassment, or other strong emotion.
Smile➦
To have or form a smile.
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Grin➦
To express with a grin
I grinned my approval.
Smile➦
To look with favor or approval
Fortune smiled on our efforts.
Grin➦
The act of grinning.
Smile➦
To express cheerful acceptance or equanimity
We smiled at the bad weather and kept going.
Grin➦
The facial expression produced by grinning.
Smile➦
To express with a smile
Grandmother smiled her consent.
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Grin➦
A smile in which the lips are parted to reveal the teeth.
Smile➦
A facial expression comprised by flexing the muscles of both ends of one's mouth, often showing the front teeth, without vocalisation, and in humans is a common involuntary or voluntary expression of happiness, pleasure, amusement, goodwill, or anxiety.
She's got a perfect smile.
He has a sinister smile.
She had a smile on her face.
He always puts a smile on my face.
Grin➦
(obsolete) A snare; a gin.
Smile➦
(figurative) Favour; propitious regard.
The smile of the gods
Grin➦
(intransitive) To smile, parting the lips so as to show the teeth.
Why do you grin?
Did I say something funny?
Smile➦
A drink bought by one person for another.
Grin➦
(transitive) To express by grinning.
She grinned pleasure at his embarrassment.
Smile➦
(ambitransitive) To have (a smile) on one's face.
When you smile, the whole world smiles with you.
I don't know what he's smiling about.
She smiles a beautiful smile.
Grin➦
To show the teeth, like a snarling dog.
Smile➦
(transitive) To express by smiling.
To smile consent, or a welcome
Grin➦
(transitive) To grin as part of producing a particular facial expression, such as a smile or sneer.
He grinned a broad smile when I told him the result.
He grinned a cruel sneer when I begged him to stop.
Smile➦
(intransitive) To express amusement, pleasure, or love and kindness.
Grin➦
A snare; a gin.
Like a bird that hasteth to his grin.
Smile➦
(intransitive) To look cheerful and joyous; to have an appearance suited to excite joy.
The sun smiled down from a clear summer sky.
Grin➦
The act of closing the teeth and showing them, or of withdrawing the lips and showing the teeth; a hard, forced, or sneering smile.
He showed twenty teeth at a grin.
Smile➦
(intransitive) To be propitious or favourable; to countenance.
The gods smiled on his labours.
Grin➦
To show the teeth, as a dog; to snarl.
Smile➦
To express amusement, pleasure, moderate joy, or love and kindness, by the features of the face; to laugh silently.
He doth nothing but frown. . . . He hears merry tales and smiles not.
She smiled to see the doughty hero slain.
When last I saw thy young blue eyes, they smiled.
Grin➦
To set the teeth together and open the lips, or to open the mouth and withdraw the lips from the teeth, so as to show them, as in laughter, scorn, or pain.
The pangs of death do make him grin.
Smile➦
To express slight contempt by a look implying sarcasm or pity; to sneer.
'T was what I said to Craggs and Child,Who praised my modesty, and smiled.
Grin➦
To express by grinning.
Grinned horrible a ghastly smile.
Smile➦
To look gay and joyous; to have an appearance suited to excite joy; as, smiling spring; smiling plenty.
The desert smiled,And paradise was opened in the wild.
Grin➦
A facial expression characterized by turning up the corners of the mouth; usually shows pleasure or amusement
Smile➦
To be propitious or favorable; to favor; to countenance; - often with on; as, to smile on one's labors.
Grin➦
To draw back the lips and reveal the teeth, in a smile, grimace, or snarl
Smile➦
To express by a smile; as, to smile consent; to smile a welcome to visitors.
Smile➦
To affect in a certain way with a smile.
And sharply smile prevailing folly dead.
Smile➦
The act of smiling; a peculiar change or brightening of the face, which expresses pleasure, moderate joy, mirth, approbation, or kindness; - opposed to frown.
Sweet intercourseOf looks and smiles: for smiles from reason flow.
Smile➦
A somewhat similar expression of countenance, indicative of satisfaction combined with malevolent feelings, as contempt, scorn, etc; as, a scornful smile.
Smile➦
Favor; countenance; propitiousness; as, the smiles of Providence.
Smile➦
Gay or joyous appearance; as, the smiles of spring.
The brightness of their [the flowers'] smile was gone.
Smile➦
A facial expression characterized by turning up the corners of the mouth; usually shows pleasure or amusement
Smile➦
Change one's facial expression by spreading the lips, often to signal pleasure
Smile➦
Express with a smile;
She smiled her thanks