1. the force that resists motion when two surfaces rub against each other
Usage: physics
2. conflict or disagreement between people or groups
3. the rubbing of one surface against another

Examples

• The car’s brakes work by using friction to slow the wheels.
• Oil reduces friction between moving parts in an engine.
• There was friction between the two departments over budget cuts.
• The friction between the teammates affected their performance.
• Friction from the rope burned his hands.
• The match lit due to friction against the rough surface.
• Political friction delayed the passage of the bill.