System-arm32-binder64-ab.img.xz [better] -

The first part is the most straightforward. This refers to the . In the Android filesystem hierarchy, this partition contains the Android operating system itself (excluding the kernel and the recovery image).

: This indicates the image is for the /system partition of an Android device, containing the OS, libraries, and system apps. system-arm32-binder64-ab.img.xz