aptness vs indiscretion

aptness

noun
  • disposition of the mind; propensity 

  • suitability; the quality of being apt or suitable 

  • speed or readiness in learning; docility 

  • proneness; tendency 

indiscretion

noun
  • The quality or state of being indiscreet; lack of discretion 

  • An indiscreet or imprudent act; indiscreet behavior. 

  • A brief sexual liaison. 

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