32-bit apps on 64-bit OS

This may be silly questions, but since I don't know, therefore am asking that.

The questions is "Can 32-bit applications run/work on 64-bit OS?"

In 64 bit Windows, you can...dunno about others...

64 bit Windows uses "WOW64" sub-system to do so



WOW64 is the x86 emulator that allows 32-bit Windows-based applications to run seamlessly on 64-bit Windows.

The system isolates 32-bit applications from 64-bit applications, which includes preventing file and registry collisions. Console, GUI, and service applications are supported. The system provides interoperability across the 32/64 boundary for scenarios such as cut and paste and COM. However, 32-bit processes cannot load 64-bit DLLs, and 64-bit processes cannot load 32-bit DLLs.