havering vs inconstancy

havering

noun

  • Indecision, indecisive behaviour. 

adj

  • Hesitant; indecisive. 

  • Long-winded 

inconstancy

noun

  • Lack of constancy; lack of consistency in thought, emotion or action. 

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