carousel vs come about

carousel

verb
  • To revolve or change places. 

noun
  • A tilting match or tournament accompanied by games, shows, and allegorical performances. 

  • An equestrian discipline in which groups of riders make various formations. 

  • A continuously revolving device for item delivery. 

  • A merry-go-round (type of ride on rotating platform). 

  • The rotating glass plate in a microwave oven. 

  • A visual component that displays a horizontal series of items one at a time. 

come about

verb
  • To change; to come round. 

  • To come to pass; to develop; to occur; to take place; to happen; to exist. 

  • To tack; to change tack; to maneuver the bow of a sailing vessel across the wind so that the wind changes from one side of the vessel to the other; to position a boat with respect to the wind after tacking. See also come to. 

How often have the words carousel and come about occurred in a corpus of books? (source: Google Ngram Viewer )