только ед.
1) discord;
disagreement, dissension сеять рознь между кем-л. ≈ to sow (seeds of) discord/dissension (between, among)
2) difference человек человеку рознь ≈ there are all kinds of people;
there are people, and then there are people;
there are not two people alike
Большой англо-русский и русско-английский словарь. 2001.