glum vs kittle

glum

adj
  • despondent; moody; sullen 

kittle

adj
  • Ticklish. 

  • Not easily managed 

verb
  • To tickle, to touch lightly. 

  • To bring forth young, as a cat; to kitten; to litter. 

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