clothes moth vs deathwatch

clothes moth

noun
  • Any of several small, yellowish or buff-colored moths of the family Tineidae, feeding on textiles (wool, fur, feathers). 

deathwatch

noun
  • A deathwatch beetle. 

  • One who guards a condemned person before execution. 

  • A vigil beside a dying person 

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