An accident, also known as an unintentional injury, is an undesirable, incidental, and unplanned event that could have been prevented had circumstances leading up to the accident been recognized, and acted upon, prior to its occurrence. Most scientists who study unintentional injury avoid using the term "accident" and focus on factors that increase risk of severe injury and that reduce injury incidence and severity.
An emergency is a situation that poses an immediate risk to health, life, property, or environment. Most emergencies require urgent intervention to prevent a worsening of the situation, although in some situations, mitigation may not be possible and agencies may only be able to offer palliative care for the aftermath.
Major is a military rank of commissioned officer status, with corresponding ranks existing in many military forces throughout the world.
Our wanton accidents take root, and grow
To vaunt themselves God's laws.
Charles Kingsley, Saint's Tragedy (1848), Act II, scene 4.
I have shot mine arrow o'er the house
And hurt my brother.
William Shakespeare, Hamlet (1600-02), Act V, scene 2, line 254.
To what happy accident is it that we owe so unexpected a visit?
Oliver Goldsmith, The Vicar of Wakefield (1768), Chapter XIX.