he/she vs hoo

he/she

pron
  • He or she; singular of they, used as a gender-neutral reference to the third person singular. 

hoo

pron
  • he, also a gender-neutral third person pronoun 

  • she 

adv
  • how 

intj
  • Used to grab the attention of others. 

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

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