This is the 3096th most frequent Dutch word.
device
A tool, machine, or piece of equipment created for a specific purpose.
Here, 'apparaat' refers to a physical piece of equipment, which is common.
Het apparaat dat ik gisteren kocht, werkt niet goed.
The device I bought yesterday does not work well.
In this context, 'middel' refers to a conceptual tool or device used for an objective.
De methode werkt als een effectief middel om te leren.
The method works as an effective device for learning.
'Technieken' implies methods or strategical devices applied in a process.