mooch vs scab

mooch

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

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

  • To steal or filch. 

noun
  • An aimless stroll. 

  • One who mooches; a moocher. 

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

scab

verb
  • To beg (for), to cadge or bum. 

  • To remove part of a surface (from). 

  • To form into scabs and be shed, as damaged or diseased skin. 

  • To act as a strikebreaker. 

  • To become covered by a scab or scabs. 

noun
  • The mange, especially when it appears on sheep. 

  • The scabies. 

  • A worker who acts against trade union policies; any picket crosser (strikebreaker), and especially one with devotion to union busting. 

  • Any of several different diseases of potatoes producing pits and other damage on their surface, caused by streptomyces bacteria (but formerly believed to be caused by a fungus). 

  • A slight irregular protuberance which defaces the surface of a casting, caused by the breaking away of a part of the mold. 

  • A mean, dirty, paltry fellow. 

  • Any one of various more or less destructive fungal diseases that attack cultivated plants, forming dark-colored crustlike spots. 

  • An incrustation over a sore, wound, vesicle, or pustule, formed during healing. 

  • Common scab, a relatively harmless variety of scab (potato disease) caused by Streptomyces scabies. 

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