headache vs moth

headache

noun
  • A nuisance or unpleasant problem. 

  • A pain or ache in the head. 

moth

noun
  • Anything that gradually and silently eats, consumes, or wastes any other thing. 

  • A usually nocturnal insect of the order Lepidoptera, distinguished from butterflies by feather-like antennae. 

  • The plant Vigna aconitifolia, moth bean. 

verb
  • To hunt for moths. 

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