1.
friction, rubbing
The resistance encountered when surfaces move against each other (physics).
2.
friction, conflict, discord
Disagreement or tension between people, groups, or nations (figurative).
摩擦 is used both literally (physical friction) and figuratively (conflict between people/groups).
Physics context:
- 摩擦力 (frictional force)
- 摩擦係数 (coefficient of friction)
- 摩擦熱 (frictional heat)
Social/political context:
- 貿易摩擦 (trade friction)
- 国際摩擦 (international friction)
- 人間関係の摩擦 (interpersonal conflict)
Related terms:
- 衝突 (collision, clash - more intense)