I have an example I can share based on the definition you give. Take a smartphone for example, focusing mainly on the touch-screen interface. Validation processes would involve making sure that the pressure exerted on the display would translate from physical data as pressure to a change in some value (say, resistance) and the phone would be able to interpret that value as a user input. Verification would involve how sensitive that input needs to be from the user’s end to make sure the user is comfortable in using the touchscreen of the product. It’s a difference between the Engineer’s point of view and the end user’s point of view in which you have to strike a delicate balance be adhering to product requirements whilst meeting customer needs.