名词

1. 矛盾;不和;争执
If there is friction between people, there is disagreement and argument between them.

2. 摩擦力
Friction is the force that makes it difficult for things to move freely when they are touching each other.

3. 摩擦
Friction is the rubbing of one object against another.

1. effort expended in moving one object over another with pressure

Synonym: detritionrubbing

2. the resistance encountered when one body is moved in contact with another

Synonym: rubbing

3. a state of conflict between persons

Synonym: clash