add

to put one thing with another.

clockwise

moving in the same direction as the hands on a clock.

vibrate

to make tiny, rapid, shaking movements.

vanish

to disappear suddenly.

intersection

a place where lines or roads cross each other.

appear

to come into view.

patrol

to guard a place by moving around it and checking it regularly

rectangle

a flat four-sided shape with four right angles in its corners