I think the line is _very_ thin, but I think I understand what OP means:
"ok" is taken verbatim from english and has not undergone any "modifications" to adopt it to a local language (though, I guess, that is not 100% true? in polish we sometimes spell it "okej", but I would argue that "ok" and "okej" have slightly different connotations.)
Whereas "chocolate" is "localized" into many other languages, "Schokolade" in german, "czekolada" in polish, etc.), and is not the _exact same word_.
"ok" is taken verbatim from english and has not undergone any "modifications" to adopt it to a local language (though, I guess, that is not 100% true? in polish we sometimes spell it "okej", but I would argue that "ok" and "okej" have slightly different connotations.)
Whereas "chocolate" is "localized" into many other languages, "Schokolade" in german, "czekolada" in polish, etc.), and is not the _exact same word_.