pincers vs seaweed

pincers

noun
  • The front claws of crustaceans such as lobsters. 

  • A gripping tool, pivoted like a pair of scissors, but with blunt jaws. 

seaweed

noun
  • Any of numerous marine plants and algae, such as a kelp. 

  • Any of various fresh water plants and algae. 

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