realization and generalization UML?

I don't understand the difference between the UML realization and generalization arrow in UML class diagrams. In my code specific, I created an interface:

public interface IParser {
   void Parse(string[] txtFile);
   void Add(List<char> gameMap);
}

And I inherit it:

public class ParseExits : IParser {

   public Dictionary<char, string> Dict { get;  }
   public List<Entity> EntityList  { get; }

   public ParseExits() {
            Dict = new Dictionary<char, string>();
            EntityList = new List<Entity>();
        }

   public void Parse(string[] txtFile) {
       ...
   }

   public void Add(List<char> gameMap) {
       ...
   }

I would say it's a realization as I inherit the whole interface. I realize the IParser (the "template"). Whereas a generalization would be to use some of the interface? Is this a correct distinction?