moan vs sie

moan

verb
  • To grieve. 

  • To complain; to grumble. 

  • To say in a moan, or with a moaning voice. 

  • To make a moan or similar sound. 

noun
  • a low, mournful cry of pain, sorrow or pleasure 

sie

verb
  • To fall, as in a swoon; faint. 

  • To strain, as milk; filter. 

  • To drop, as water; trickle. 

  • To sift. 

  • To sink; fall; drop. 

noun
  • A drop. 

pron
  • Gender-neutral subject pronoun, grammatically equivalent to the gendered pronouns he and she 

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