Exposure triangle

Aperture

f5.6

f8

f11

f16

f22

f32

f36

As the aperture decreases and the number "f"  increases, the background becomes more in focus.

shutter speed

2

1

1/2

1/10

1/50

1/160

As the number gets smaller ( 1, 1/2, 1/5, 1/10 etc.), the image becomes darker and the camera takes the picture faster making the picture more still and less blurry.