Answers

2016-01-19T19:29:34+05:30
Smile reduces stress. It makes us feels fresh. If one smiles other smiles too. It increase the beauty of the face.
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i think its simile not smile :)
ohh sorry i saw the question wrong
2016-01-19T19:39:58+05:30
The figure of speech involving the comparison of one thing with another thing of  a different kind used to make a description more emphatic or vivd.
egs:
 brave as a lion
cute as a kitten
busy as a bee
black as a coal
blind as a bat

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