somnolent vs tired

somnolent

adj
  • Drowsy or sleepy. 

tired

adj
  • In need of some rest or sleep. 

  • ineffectual; incompetent 

  • Fed up, annoyed, irritated, sick of. 

  • Overused, cliché. 

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