defile vs launder

defile

verb
  • To make (someone or something) physically dirty or unclean; to befoul, to soil. 

  • Synonym of defilade (“to fortify (something) as a protection from enfilading fire”) 

  • To act inappropriately towards or vandalize (something sacred or special); to desecrate, to profane. 

  • To make (someone or something) morally impure or unclean; to corrupt, to tarnish. 

  • To cause (something or someone) to become ritually unclean. 

noun
  • A narrow passage or way (originally (military), one which soldiers could only march through in a single file or line), especially a narrow gorge or pass between mountains. 

  • A single file of soldiers; (by extension) any single file. 

  • An act of marching in files or lines. 

  • An act of defilading a fortress or other place, or of raising the exterior works in order to protect the interior. 

launder

verb
  • To wash; to wash, and to smooth with a flatiron or mangle; to wash and iron. 

  • To disguise the source of (ill-gotten wealth) by various means. 

noun
  • A gutter (for rainwater). 

  • A trough or channel carrying water to the wheel of a watermill. 

  • A trough used by miners to receive powdered ore from the box where it is beaten, or for carrying water to the stamps, or other apparatus for comminuting (sorting) the ore. 

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