detraction vs skewness

detraction

noun
  • The act of detracting something, or something detracted; taking away; diminution. 

  • A derogatory or malicious statement; a disparagement, misrepresentation or slander. 

  • The act of revealing previously unknown faults of another person to a third person. 

skewness

noun
  • The property of being skew. 

  • A measure of the asymmetry of the probability distribution of a real-valued random variable; is the third standardized moment, defined as scriptstyle 𝛾₁=(𝜇₃)/(𝜎³),! where 𝜇₃ is the third moment about the mean and 𝜎 is the standard deviation. 

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