collision

Everyday

1. A collision is when two or more things crash into each other while moving, like cars, people or balls. tree →
2. A collision is a strong disagreement between ideas or people: «a collision of interests». tree →

In the lessons

In science lessons collisions are about forces and movement; in road safety lessons they are crashes to avoid. Phrases: «a head-on collision», «in collision with», «a collision course».

Examples

• There was a collision between two cars at the corner. tree →
• The bus was in a collision with a lorry. tree →
• Look both ways to avoid a collision. tree →
• In science, we rolled two balls to watch a collision. tree →
• The two players had a collision and both fell. tree →
• Their plans are on a collision course. tree →
• Such a division of ideas seemed to promise civil wars and all kinds of troubles to the State, and even in the Palace the two parties frequently came into collision. tree →

Note

Countable. Spelling: col-li-sion (double l, -sion). «Head-on» means front to front. Safety: wearing a seat belt protects you in a collision.