blech vs bleck

blech

noun
  • A metal sheet used to cover stovetop burners on Shabbat to allow food to be kept warm without violating the prohibition against cooking. 

intj
  • An imitation of the sound of gagging, used to express disgust or disdain. 

verb
  • To have the vomiting reflex triggered. 

bleck

noun
  • Any black fluid substance, as in blacking for leather, or black grease. 

  • Coalfish (Pollachius virens). 

  • Soot, smut. 

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