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The ISO of the camera is how sensitive to light the lens of the camera is. This is good because changing the ISO in most situations can create the best lighting in an image.

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The size of the aperture controls how much light the sensor is exposed to, the smaller the aperture the less light hence a darker photo, the wider it is the more light hence a brighter image.

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The shutter speed is how long the sensor is exposed to light, the longer the shutter speed, the more blurry and washed out the photo will be, the quicker it is, the sharper and less blur there is in the image.

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The exposure triangle is a concept that is used in taking photos for specific needs. In some cases there will be a wider or smaller aperture sizes, but this affects light that the sensor is exposed to so ISO changes would have to be made as well as shutter speed. When shutter speed is the main focus you will have to change aperture size and ISO so that the photo wont come out over or under exposed, same for the aperture size if its the main focus.

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Light drawings are made when a long shutter speed is combined with a moving light source in a dark room to create a drawing effect.

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This is the act of making the subject and/or background (surrounding area) appear crisp in every form without any blur.

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Camera shake happens when the shutter speed of the camera is too long in conjunction with a moving photographer. The out come is a fully blurry picture with light streaks.

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Motion blur is an effect that happens when the shutter speed is relatively long and the camera isn't moving. The blur happens in the sense that there is a subject or background aspect moving in the frame at a fairly quick speed, this causes that object to blur.