insect vs lindworm

insect

noun
  • An arthropod (in the Insecta class) characterized by six legs, up to four wings, and a chitinous exoskeleton. 

  • A contemptible or powerless person. 

  • Any small arthropod similar to an insect, including spiders, centipedes, millipedes, etc. 

lindworm

noun
  • A wingless serpentine dragon having two arms. 

  • A draconic creature, similar to a wyvern. 

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