oscitant vs yawning

oscitant

adj

  • yawning; gaping 

  • sleepy; drowsy; sluggish; careless 

yawning

adj

  • That yawns or yawn. 

  • Wide open. 

noun

  • The action of the verb yawn. 

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