blind-fly vs deer fly

blind-fly

noun
  • Any of several medium-sized blood-sucking flies, of the family Tabanidae, usually species in the genus Haematopota. 

  • The game of blind man's buff 

deer fly

noun
  • A gold- or green-eyed horsefly of the genus Chrysops in the family Tabanidae; pests to cattle, horses and humans, feeding on their blood. 

  • A Eurasian species of louse fly in the family Hippoboscidae, Lipoptena cervi; parasites of elk, deer and other bovine animals, sucking blood and laying eggs in the fur of the host animals. 

How often have the words blind-fly and deer fly occurred in a corpus of books? (source: Google Ngram Viewer )