Fear is an emotion induced by perceived danger or threat, which causes physiological changes and ultimately behavioral changes, such as fleeing, hiding, or freezing from perceived traumatic events. Fear in human beings may occur in response to a certain stimulus occurring in the present, or in anticipation or expectation of a future threat perceived as a risk to oneself.
A phobia is an overwhelming and debilitating fear of an object, place, situation, feeling or animal. Phobias are more pronounced than fears. They develop when a person has an exaggerated or unrealistic sense of danger about a situation or object.