A trauma is often caused by a crisis. A crisis is the issue, often an emergency, accident or negative undertaking, that may result in trauma.
accident harm to body incident something
emergency may lead to disaster
There is no difference. An Emergency Room Doctor is an MD. MD stands for Medical Doctor.
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Mankind
two and many
A and E as in Accident and Emergency or Casualty
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An emergency is life threatening and urgent is serious but not life threatening
An emergency is life threatening and urgent is serious but not life threatening
An emergency is life threatening and urgent is serious but not life threatening