dipteran vs downy

dipteran

adj
  • Relating to or denoting dipterans. 

noun
  • An insect of the large order Diptera; a fly. 

downy

adj
  • Sharp-witted, perceptive. 

  • Having down, covered with a soft fuzzy coating as of small feathers or hair. 

  • Low-spirited; down in the mouth. 

noun
  • A blanket filled with down; a duvet. 

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