Answer: retronym
AnswerCrossword Clue
RETRONYMAnalog watch, for one
RETRONYM"Acoustic guitar" or "push lawn mower," e.g.
RETRONYM"Cloth diaper" or "film camera"
RETRONYM"Acoustic guitar" or "terrestrial radio"
retronyma term coined to distinguish the original referent from a later development
retronymterm, as acoustic guitar, coined in modification of the original referent that was used alone, as guitar, to distinguish it from a later contrastive development, as electric guitar