* Port - to modify a program to work on a particular [[Computer Architecture|architecture]].

* Portable - a program which can be used on multiple [[Computer Architecture|architectures]], typically by compiling/building for a specific target architecture. Note that '''portable''' does not necessarily mean '''able to be ported''' -- it is often used to mean code which does not need to be ported, because it is architecture-neutral (i.e., contains no assembler, [[Word|word]] size assumptions, or other architecture-specific code, and can be compiled (or interpreted) from a high-level language on a wide range of architecture types).

* Non-portable - synonym for architecture-specific (often extremely so!)

* Cross-platform - Code which will execute either on multiple [[Computer Architecture|architectures]] or on multiple operating systems.