ankle boot vs wader

ankle boot

noun
  • A boot that rises up to the ankle 

wader

noun
  • A waterproof boot that comes up to the hip, used by fishermen, etc. 

  • One who wades. 

  • A long-legged bird associated with wetland or coastal environments. 

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