earthworm vs lindworm

earthworm

noun
  • A worm that lives in the ground. 

  • A worm of the family Lumbricidae, or, more generally, of the suborder Lumbricina. 

  • A contemptible person; a groveller. 

lindworm

noun
  • A draconic creature, similar to a wyvern. 

  • A wingless serpentine dragon having two arms. 

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