covert vs moth

covert

noun
  • A feather that covers the bases of flight feathers. 

  • A covering. 

  • A disguise. 

  • Area of thick undergrowth where animals hide. 

  • A hiding place. 

adj
  • Under coverture. 

  • Secret, surreptitious, concealed. 

moth

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

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

  • The plant Vigna aconitifolia, moth bean. 

verb
  • To hunt for moths. 

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