Cogwheel is commonly used in mechanical and engineering contexts referring to physical parts of a machine.

Mechanical Context

Cogwheels interlock with one another, causing a movement or transfer of force in machinery.

Interlocking Motion

Each cogwheel is made for a specific position and task, showing the importance of fitting the right piece in machines.

Not Interchangeable

 you would see something very very similar to this there's this incredible complexity in the CPU and this incredible regularity in the memory if you ever seen an electron microscope picture you'll see this it all looks the same and there's a bit over here which isn't got to be complicated this all this cogwheel mechanism here is doing