The simplest analogy I can give is to think of a C program as being a book written in Latin. For the program to be useful on your desktop PC (Intel/AMD), the book is translated into German (the native language of the PC) while for the Raspberry PI, the book is translated into French (the native language of the PI). If you take a book translated to German, it can't be read by a French only speaker nor can a book translated to French be read by a German only speaker.