fook vs ish

fook

verb

  • To fuck. 

intj

  • Fuck. 

ish

noun

  • The letter which stands for the sh sound /ʃ/ in Pitman shorthand. 

  • Shit. 

adv

  • about, approximately 

  • somewhat, reasonably, fairly 

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