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A cough is your way of responding when something irritates your throat .
Headache is a pain in the head which can occur on one or both sides of the head.
A pearl is a hard glistening object produced within the soft tissue of a living shelled mollusk.
Teeth of different shapes do different jobs, front teeth, pointed teeth, premolars, and molars teeth.
Stars are balls of hot, explosive gas that make their own light and heat energy.
Venus is the second planet from the Sun and is Earth's closest planetary neighbor.
