No. Just that within the Apple ecosystem, the terms were used in a specific way.

Apple GC is a form of GC. There is no redefinition going on. It is correct.

However, it is ridiculous to say "we will replace garbage collection with garbage collection" and it is too cumbersome to say "we will replace reference counting garbage collection with tracing garbage collection".

Both "garbage collection" for the tracing garbage collection mechanism and "reference counting" for the reference-counting garbage collection mechanism are correct uses of terminology.

Using these shorthands instead of either the cumbersome complete terms or the confusing other shorthand is perfectly fine.

Although admittedly some Apple zealots started insisting that the Apple shorthands were the correct terminology. Or that programs that were broken by the broken GC had always been broken. Or that what Apple calls "MVC" is actually the correct definition of MVC when it is not.

https://blog.metaobject.com/2015/04/model-widget-controller-...

https://blog.metaobject.com/2017/03/concept-shadowing-and-ca...