A BISHOP OR A KNIGHT?

GAME ANALYSIS
Let's start with our first game.
Game 1:

In move 15 black bishop played e2 pinning the rook and the queen. White played rook e1 losing the queen. So here we see the bishop pinning two of the most important pieces. , rook and queen.
Game 2:

As soon as white knight double attacked the king and rook , black resigned.
Game 3:

As soon as white bishop double attacked the king and queen , black resigned
Game 4:
The knight is very useful in petrov defence.

Game 5 :
The bishop pinned the king and queen to kill the queen

Game 6: The bishop is useful for long distance checks

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UNITY IS STRENGTH
In this 2 games the bishop and the knight worked together to kill the queen.

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CONCLUSION
Both the bishop and the knight are prominent pieces in the chess board. The bishops are useful in checkmates, long distance checks (as I explained you in game 6) , checkmates and diagonal pins. The knight is useful for sudden attacks and pins and also, checks and checkmates. But in chess also applies the proverb " unity is strength " . The knights and bishops , when they attack together , creates a fighting force that is very hard to break.