chaos - (n.) complete confusion and disorder : a state in which behavior and events are not controlled by anything. Chaotic is the adjective.
riot – (n.) a violent disturbance of the peace by a crowd, "riots broke out in the capital;" v. take part in a violent public disturbance, "the people rioted in the streets."
obstetrics – (n.) the branch of medicine and surgery concerned with childbirth and the care of women giving birth.
missionary – (n.) a person who is sent to a foreign country to do religious work (such as to convince people to join a religion or to help people who are sick, poor, etc.)