implementing compare() method in c# for a custom class

class Compare : IEqualityComparer<Process>
    {
        public bool Equals(Process x, Process y)
        {
            return x.ProcessName == y.ProcessName;
        }

        public int GetHashCode(Process obj)
        {
            return obj.GetHashCode();
        }
    }
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and used like:
var someTestList = latesProcessList.Except(snapShotList,new Compare()).ToList();
and
foreach (var item in latesProcessList.Except(snapShotList,new Compare()))
{
   item.Kill();
}