disregard vs musing

disregard

noun
  • The act or state of deliberately not paying attention or caring about; misregard. 

verb
  • To ignore; pay no attention to. 

musing

noun
  • thought, meditation, contemplation 

adj
  • Absorbed in thought; contemplative 

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