57) Incumbent - Adjective, Noun - Necessary for someone as a duty or responsibility. Example - The government realized that it was incumbent on them to act.
53) Catastrophe - Noun - An event causing great and usually sudden damage and suffering, a disaster/ Something very unfortunate or unsuccessful. Example - The tax would be a catastrophe for the industry.
52) Jury - Noun, Verb, Adjective - A body of people (typically twelve in number) sworn to give a verdict in a legal case on the basis of evidence submitted to them in court. Example - They have a right to trial by jury .
50) Collision - Noun - An instance of one moving object or person striking violently against another/ A conflict between opposing ideas, interest or factions. Example - His car was in collision with a lorry.
46) Philanthropist - Noun - A person who seeks to promote the welfare of others, especially by the generous donation of money to good causes. Example - The trust is founded by an Indian philanthropist .