friction
n. uncountablen. the force that happens when two things rub against each other, which makes them slow down. It can also mean the bad feeling or disagreement between people who do not get along.
n. the resistance that one surface or object encounters when moving over another. In a social context, it refers to the tension or conflict resulting from a clash of differing opinions or interests.
The friction between the tires and the road helps the car stop.
The new manager's strict style caused a lot of friction among the existing staff members.
Engineers must account for kinetic friction when designing mechanical components to ensure that heat buildup does not lead to premature structural failure.
From Middle French friction and directly from Latin frictionem, nom. frictio (“a rubbing, rubbing down”).
Uncountable in both its physical and social senses; occasionally used with 'between' to specify the parties or surfaces involved.