diffplex result parse and show the output

string s1 = "The red brown fox jumped over";
string s2 = "The brown spotted fox leaped over";

List diff;
IEnumerable set1 = s1.Split(' ').Distinct();
IEnumerable set2 = s2.Split(' ').Distinct();

if (set2.Count() > set1.Count())
{
     diff = set2.Except(set1).ToList();
              
}
else
{
     diff = set1.Except(set2).ToList();
}