Image source: http://www.interestingideas.com/roadside/gyros/arbor2.jpg
A skewar represents the axis of rotation to support a piece of beef that will
be carved for gyro sandwhiches. As the skewer spins, the heat distributes so
that the meet is cooked evenly.
The axis on a car supports the wheels and is their center of rotation.
Image source: http://www.sdf.org/cotton_candy_copy_90.jpg
Cotton candy is spun on a stick that serves as its axis of rotation. As the
stick rotates, the cotton candy gradually accumulates into an oblong object
that surrounds the stick.
A top will spin longer if its axis of rotation (usually the stick) is perpendicular
to the floor.