cormorant vs laughing gull

cormorant

noun
  • Any of various medium-large black seabirds of the family Phalacrocoracidae which dive into water for fish and other aquatic animals, found throughout the world except for islands in the centre of the Pacific Ocean; specifically, the great cormorant (Phalacrocorax carbo). 

  • A voracious eater; also, a person who, or thing which, is aggressively greedy for wealth, etc. 

adj
  • Voracious; aggressively greedy. 

laughing gull

noun
  • An American gull (Leucophaeus atricilla); in summer the head is nearly black, the back slate color, and the five outer primaries black. 

  • A common European gull (Xema ridibundus). 

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