amphibian vs watery

amphibian

adj
  • Of or relating to the class Amphibia. 

  • Capable of operating on both land and water amphibious. 

noun
  • A vehicle which can operate on land and water. See Wikipedia article on "Amphibious aircraft" 

  • An animal of the Amphibia; any four-legged vertebrate that does not have amniotic eggs, living both on land and in water. 

watery

adj
  • Resembling or characteristic of water. 

  • Tearful. 

  • Diluted or having too much water. 

  • Weak and insipid. 

  • Thin and pale therefore suggestive of water. 

  • Wet, soggy or soaked with water. 

  • Discharging water or similar substance as a result of disease etc. 

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