Collision
WordNet
noun
(1) A conflict of opposed ideas or attitudes or goals
"A collision of interests"
(2) An accident resulting from violent impact of a moving object
"Three passengers were killed in the collision"
"The collision of the two ships resulted in a serious oil spill"
(3) (physics) an brief event in which two or more bodies come together
"The collision of the particles resulted in an exchange of energy and a change of direction"
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