retronym

A retronym is a newly coined term that is created to distinguish an older version of something from a newer version. The term is formed by adding a descriptive word or phrase to the original name to clarify the distinction. For example, "acoustic guitar" is a retronym, coined to differentiate it from the "electric guitar" that became popular later. Similarly, "traditional pizza" might be used to distinguish it from newer variations like "New York-style pizza" or "Chicago deep-dish pizza."

Retronyms arise when a new innovation or development makes the original version seem less common or distinct. The purpose of a retronym is not to rename the original item but to provide a clear and unambiguous way to refer to it in contrast to its modern counterpart. Other common examples include "nail polish" versus "nail varnish," "analog watch" versus "digital watch," and "first-class" mail versus "standard-class" mail. The creation of retronyms is a natural linguistic process that helps language adapt to changing technologies and concepts. They are often a reflection of technological advancement or evolving cultural norms.