ugh vs yech

ugh

intj
  • Used to express repugnance, disgust, or annoyance. 

  • Used to express inarticulate vocalisations, such as used by a caveman. 

yech

intj
  • An exclamation of disgust. 

noun
  • An exclamation of disgust. 

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