scrubber vs slag

scrubber

noun
  • A prostitute or a slovenly woman. 

  • Someone who lives in the bush; a wild person, someone only partly assimilated into society. 

  • A machine for washing leather after the tanpit. 

  • A person or appliance that cleans floors or similar by scrubbing. 

  • An animal (especially cattle) that has broken away from the herd and established itself in the bush. 

  • A dirty or unhygienic person. 

  • A device that removes impurities from gases. 

  • A horizontal bar allowing the user to set the playback position. 

slag

noun
  • A prostitute, or a woman who acts like one; a slut. 

  • Scum that forms on the surface of molten metal. 

  • Scoria associated with a volcano. 

  • Waste material from a mine. 

  • Hard aggregate remaining as a residue from blast furnaces, sometimes used as a surfacing material. 

  • Impurities formed and separated out when a metal is smelted from ore; vitrified cinders. 

  • A contemptible person, a scumbag. 

verb
  • To spit. 

  • To become slag; to agglomerate when heated below the fusion point. 

  • To reduce to slag. 

  • To talk badly about; to malign or denigrate (someone). 

  • To produce slag. 

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