complain vs sie

complain

verb
  • To creak or squeak, as a timber or wheel. 

  • To make a formal accusation or bring a formal charge. 

  • To express feelings of pain, dissatisfaction, or resentment. 

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. 

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

noun
  • A drop. 

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