disguise vs skewness

disguise

noun
  • The act or state of disguising, notably as a ploy. 

  • The appearance of something on the outside which masks what’s beneath. 

  • Material (such as clothing, makeup, a wig) used to alter one’s visual appearance in order to hide one's identity or assume another. 

verb
  • To change the appearance of (a person or thing) so as to hide, or to assume an identity. 

  • To avoid giving away or revealing (something secret); to hide by a false appearance. 

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=(πœ‡β‚ƒ)/(𝜎³),! where πœ‡β‚ƒ is the third moment about the mean and 𝜎 is the standard deviation. 

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