noun (n)

• a never-ending cycle of activities and events (especially when they seem to have little purpose)(noun.event)

  Example:
  If we lose the election the whole legislative merry-go-round will have to start over.
  

  source: wordnet30
• a large, rotating machine with seats for children to ride or amusement(noun.artifact)

  Synonym:
  carousel, carrousel, roundabout, whirligig
  

  source: wordnet30