caterpillar vs geometrid

caterpillar

noun
  • The larva of a butterfly or moth; leafworm 

  • A vehicle with a caterpillar track; a crawler 

  • A set of subtrees of a tree 

geometrid

noun
  • A larva of such moth, which when walking alternate legs and prolegs, giving the appearance of measuring 

  • Any of the family Geometridae of moths 

adj
  • Relating to such moths 

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