mukluk vs waters

mukluk

noun
  • A laced winter boot resembling a traditional mukluk, with thick rubber sole and cloth upper. 

  • A soft knee-high boot of sealskin or reindeer skin, originally worn by Inuit and Yupik. 

waters

noun
  • Amniotic fluid (see note at water (“amniotic fluid”)). 

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