# How does fluid viscosity determine viscous friction between fluid and the moving plate?

When fluid is placed between two parallel plates such that one plate is moving and other is stationary, fluid will start flowing. Between plate and the fluid there is viscous friction given by equation: $$F = -\eta A \frac{\text{d}v}{\text{d}y}$$ where $$\eta$$ is fluid viscosity, $$A$$ is area of a plate and $$\text{d}v/\text{d}y$$ is a velocity gradient.

Since fluid viscosity is a measure of intermolecular or cohesive forces in a fluid, how can its value determine viscous friction between fluid and the plate since interactions between fluid and the plate aren't the same like between fluid molecules?