Let e 1 and e 2 be two English literals, and, for instance, r 1 and r 2 their Romanian equivalents; if e 1 is derived from e 2 with a certain affix, it may be the case, but it is not obligatory so, that r 1 is derived from r 2 with an affix.
in English there are drive -driver and in Romanian şofa "drive" -şofer "driver"; in English there are teach -teacher but in Romanian there are preda "teach" -profesor "teacher"; in Romanian there are bucătar -bucătărie, while in English there are cook -kitchen respectively.