lindworm vs squirm

lindworm

noun
  • A wingless serpentine dragon having two arms. 

  • A draconic creature, similar to a wyvern. 

squirm

noun
  • A twisting, snakelike movement of the body. 

verb
  • To twist one's body with snakelike motions. 

  • To twist in discomfort, especially from shame or embarrassment. 

  • To evade a question, an interviewer etc. 

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