OnCollisionEnter, collider is the gameobject

Hi, I got a script with an OnCollisionEnter. When I print the name of the collider and the name of the gameobject, it is the same name. I attached the script to a player. In my scene i have a floor and walls. When I move the the cube around, every time it touches a different tile, it triggers the OnCollisionEnter ( as expected), however it says that the player is hit by player.

Here is my code:

  void OnCollisionEnter(Collision c)
         {
             print(collider.name + " " + transform.name);
             if(collider.GetComponent<FloorPiece>())
             {
                 var floor = collider.GetComponent<FloorPiece>();
                 print(floor.color);
     
                 renderer.material.color = floor.color;
             }
         }