doot vs thoughtfulness

doot

noun

  • doubt 

  • beep (electronically-produced tone) 

verb

  • to scan 

  • to tap a card 

  • think 

  • doubt 

thoughtfulness

noun

  • Careful deliberation before action. 

  • Thoughtful and considerate attention. 

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