sie vs sigh

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 

sigh

verb
  • To lament; to grieve. 

  • To inhale a larger quantity of air than usual, and immediately expel it; to make a deep single audible respiration, especially as the result or involuntary expression of fatigue, exhaustion, grief, sorrow, frustration, or the like. 

  • To utter sighs over; to lament or mourn over. 

  • To exhale (the breath) in sighs. 

  • To express by sighs; to utter in or with sighs. 

  • To make a sound like sighing. 

noun
  • A person who is bored. 

  • A deep, prolonged audible inhale and exhale of breath; as when fatigued, frustrated, grieved, or relieved; the act of sighing. 

  • a manifestation of grief; a lament. 

intj
  • An expression of fatigue, exhaustion, grief, sorrow, frustration, or the like, often used in casual written contexts. 

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