A retronym is any term that has been renamed after something similar but newer has come into being. For example, the term “analog watch” was coined when digital watches were invented to distinguish between the two. Before that, there were only “watches”. These are 25 retronyms that will help you communicate with your grandparents.
20. Real numbers
The term was coined after the development of imaginary numbers
Before the invention of sunglasses all glasses were eyeglasses.
10. Live music
Here’s one that might be hard for you to wrap your head around, but before the rise of recorded music…all music was live.
5. Railroad car
Before the invention of the automobile all cars were railroad cars.