collision

US /kəˈlɪʒ.ən/
UK /kəˈlɪʒ.ən/
"collision" picture
1.

an instance of one moving object or person striking violently against another

:
•
There was a serious collision between two cars on the highway.
•
The spacecraft was damaged in a collision with space debris.
:
crashimpactsmashwreckaccident
2.

a clash of opposing interests or ideas

:
•
The policy led to a direct collision with public opinion.
•
There was a collision of ideas during the debate.
:
clashconflictconfrontationdisagreementopposition
:
head-on collisionon a collision course