Retronym

A retronym is the newer develope for an existing thing that allows differentiate a original form/version from a more recent one. it is for thus a word or phrase created to avoid confusion between older and newer types, whereas ago before there were more than one type no clarification was required.

Advances in technology are often responsible for the coinage of retronyms. For example, the term "acoustic guitar" was coined with the advent of electric guitars; analog watches were renamed to distinguish them from digital watches once the latter were invented; in addition to "push bike" was created to distinguish from motorbikes and motorized bicycles; finally "feature phones" were also coined gradual smartphones.

Etymology

The term retronym, a retro- from Latin retro, "before" + -nym from Greek ónoma, "name", was coined by Frank Mankiewicz in 1980 and popularized by William Safire in The New York Times Magazine.

In 2000 The American Heritage Dictionary 4th edition became the number one major dictionary to increase the word retronym.