The word for today is…
retronym (noun) – A word or phrase created because an existing term that was once used alone needs to be distinguished from a term referring to a new development, as acoustic guitar in contrast to electric guitar or analog watch in contrast to digital watch.
Source : The Free Dictionary
Etymology : Remember way back when cameras used film? Back then, such devices were simply called cameras; they weren’t specifically called film cameras until they needed to be distinguished from the digital cameras that came later. Similarly, the term desktop computer wasn’t often used until laptops became prevalent. A lot of our common retronyms have come about due to technological advances: acoustic guitar emerged to contrast with electric guitar, and brick-and-mortar store to distinguish traditional stores from online retailers. Retronym was coined by Frank Mankiewicz, an American journalist and former president of National Public Radio, and was first seen in print in 1980.
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