noun
retronym
A term created to distinguish an original concept from a newer development, e.g. 'acoustic guitar' after the invention of the electric guitar. Used in linguistics and technology contexts.
「固定電話」は、携帯電話が普及した後に生まれたレトロニムだ。
'Landline phone' is a retronym that emerged after mobile phones became widespread.
言語学では、新しい概念が登
In linguistics, retronyms are sometimes created when new concepts appear.