egger vs woodworm

egger

noun
  • An eggar moth; any of various species of family Lasiocampidae, especially the oak eggar-moth, Lasiocampa quercus. 

  • One who eggs or incites. 

  • One who gathers eggs. 

woodworm

noun
  • Any of many beetle larvae that bore into wood. 

  • Anobium punctatum, the Common Furniture Beetle. 

  • A shipworm, a worm-like mollusk in the family Teredinidae that feeds on wood underwater in saltwater. 

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