mooch vs sponger

mooch

noun
  • One who mooches; a moocher. 

  • An aimless stroll. 

  • A unit of time comprising ten days, used to measure how long someone holds a job. 

verb
  • To wander around aimlessly, often causing irritation to others. 

  • To steal or filch. 

  • To beg, cadge, or sponge; to exploit or take advantage of others for personal gain. 

sponger

noun
  • A parasitic hanger-on. 

  • A device for sponging cloth by means of a perforated adjustable cylinder. 

  • One who uses a sponge. 

  • A person or vessel employed in gathering sponges from the sea. 

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