endowment vs inability

endowment

noun
  • Property or funds invested for the support and benefit of a person or not-for-profit institution. 

  • Something with which a person or thing is endowed. 

  • Endowment assurance or pure endowment. 

  • A ceremony designed to prepare participants for their role in the afterlife. 

inability

noun
  • Lack of the ability to do something; incapability. 

  • Lack of the option to do something; powerlessness. 

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