Retronym

A retronym (a portmanteau of retro- (before) and acronym)

is a new name for an existing term

usually to help distinguish it when more variants were introduced

Most of these are not abbreviations (other -nyms rae)

for example

conventional oven, when the microwave oven was introduced

live music, when recording came around

meatspace, when cyberspace was coined

there used to be just one ATA connector for hard drives. Then a smaller, 'Serial ATA' was introduced, so we decided to call the older, parallel one Parallel ATA (PATA)

a bunch of these are specific enough to be jargon

https://en.wikipedia.org/wiki/Retronym