downforce -> κατακόρυφη δύναμη
Guitar:
The bridge design drops the bridge pins much lower than the saddle and that creates a more acute angle increasing the downforce on the saddle, heightening string tension.Downforce is a downwards lift force created by the aerodynamic characteristics of a vehicle. The purpose of downforce is to allow a car to travel faster through a corner by increasing the vertical force on the tires, thus creating more grip.
https://en.wikipedia.org/wiki/Downforc