eraser vs sweeper

eraser

noun
  • One who erases. 

  • A thing used to erase or remove something written or drawn by a pen or a pencil. 

  • A thing used to erase something written by chalk on a chalkboard, by marker on a whiteboard, or by some other erasable implement; a chalkboard eraser, whiteboard eraser, etc. 

  • An overwriter program used to prevent data recovery. 

sweeper

noun
  • One who sweeps. 

  • A vacuum cleaner. 

  • A batsman who plays sweep shots. 

  • A carpet sweeper. 

  • A character designed or capable of knocking out multiple enemies in succession, usually due to a combination of high offense and high speed. 

  • A group of students tasked at cleaning the homeroom after class dismissal. 

  • One who sweeps floors or chimneys. 

  • A tree that has fallen over a river with branches extending into the water. 

  • A defender who is the last line of defence before the goalkeeper. 

  • A fielding position along the boundary; a fielder in this position. 

  • A detector (for mines). 

  • A person who sweeps the ice ahead of the rock in play. 

  • The last person in the line of hikers that is responsible for ensuring no one gets separated from the group. 

  • Any of the small, tropical marine perciform fishes of the family Pempheridae, typically with deeply keeled, compressed bodies and large eyes. 

  • A large-radius, or high/medium speed corner in a racing circuit, named as such because of the ability of someone to trace the corner profile via "sweeping" motion of the arm. 

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