Play/Stop a MovieClip
play and stop methods play/stop the timeline of MovieClip, and since the timeline of MovieClip is independent, they play/stop only one timeline and do not affect the parent, child, etc. timelines.
gotoAndPlay and gotoAndStop methods move the MovieClip's playhead to the specified frame and play/stop it.
nextFrame method moves from the current frame to the next frame, and the prevFrame method moves from the current frame to the previous frame and stops.