They are perhaps just anachronisms, though that usually refers to things displaced in the other direction. They are not exactly archaisms, since archaisms are no longer in use. Maybe vestigialisms? The nearest 'official' term I could find is that they are examples of 'semantic shift' or 'semantic extension.'

Other example would include:

Telegraph pole (still used for telephone/power poles in some parts)
Carbon Copy
Blu Tac (which is now every other colour)
'Rewinding' a file on a digital recorder