hoo vs s/he

hoo

pron
  • she 

  • he, also a gender-neutral third person pronoun 

adv
  • how 

noun
  • A strip of land; a peninsula; a spur or ridge. 

intj
  • Used to grab the attention of others. 

s/he

pron
  • he or she 

How often have the words hoo and s/he occurred in a corpus of books? (source: Google Ngram Viewer )