headwater vs sike

headwater

noun
  • The source (and the initial part) of a stream 

sike

noun
  • A gutter or ditch; a small stream that frequently dries up in the summer. 

  • A sigh. 

verb
  • To sigh or sob. 

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