The first one (with me just standing there), is an example of a blurred and frozen shot. I’m frozen and everyone else is blurred in motion. The shutter speed for that shot was 0.5 secs.
The second photo is where one of my classmate is juggling a water gallon. This is a great example of blurred motion, you can see still see the figure of my classmate (but blurred too) and you can see that he is juggling an object in motion. The shutter speed for this shot was 1.3 secs.
In your second photo you can see as the exposure gets longer how the faster moving parts can just disappear.