My definition/understanding of a force still carries largely over from classical physics which is something that tends to change the motion of an object (a push, pull). Gravity and electromagnetism meet this definition very well because gravity is pulling things and electromagnetism is also pushing/pulling things.
Even the strong force is pulling things (pulling the quarks in protons together). But this line of logic falls short for the weak force. What is the weak force pulling/pushing? All I have heard about the Weak Force is that is facilitates the transmutation of a down quark to an up quark. However, this seems more like a process/effect not a force as it is simply changing the quark but not pushing it.
So, could someone please explain why we call it the weak force? In what way is it a 'force' (do we need to redefine force?)?