collision
noun
(physics) a 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”
Synonymshitan 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”
a conflict of opposed ideas or attitudes or goals
“a collision of interests”
Source: WordNet 3.1, Princeton University
