friction
US /ˈfrɪk.ʃən/
UK /ˈfrɪk.ʃən/

1.
fricção, atrito
the resistance that one surface or object encounters when moving over another
:
•
The car tires need good friction to grip the road.
Os pneus do carro precisam de boa fricção para aderir à estrada.
•
Applying oil reduces the friction between moving parts.
A aplicação de óleo reduz o atrito entre as peças móveis.
2.
atrito, conflito
conflict or animosity caused by a clash of wills, temperaments, or opinions
:
•
There was a lot of friction between the two departments.
Havia muito atrito entre os dois departamentos.
•
Their differing opinions caused considerable friction.
Suas opiniões divergentes causaram considerável atrito.