oscitant vs viscerotonic

oscitant

adj
  • sleepy; drowsy; sluggish; careless 

  • yawning; gaping 

viscerotonic

adj
  • Designating a personality type characterised as sociable, easy-going, and comfort-seeking. 

noun
  • A person with such a personality. 

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