Although small or big the symbols make the story more interesting, and without them they book probly would have not worked.

The Mockingbird

In the story to kill a Mockingbird a mockingbird is never really brought up or killed. But it has the biggest symbolic meaning in the story. In a way it symbolizes everyone in the story at some part. But it really symbolizes Tom Robinson, because he has done nothing bad like a mockingbird but is killed for no reason.

The Tree knot whole

The tree knot whole in the story is the only way Boo Radley communicates with the out side world. Because of that the tree knot symbolizes Boo Radley. It also symbolizes Boo’s personality and what he likes to do, because of the stuff he lives in the whole for children.