I had a run-..... with my mechanic today. He worked on my car last week but it's still not running properly. He says he guarantees all of his work, but when I took it back to him today, he said wouldn't fix it!
A ..... is an object. You can find this object just about everywhere. You can also call it a rock.
A ..... is an animal. This is a furry, small rodent that a person might buy as a house pet for his/her child.