IS there a term or lingusitic device for a name change of a noun / object that has had to change its name because of a new development. For example the invention of the electric guitar, meant the humble guitar became known as an acoustic guitar? Thank you.
You are describing a retronym:
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.