cryptology vs slang

cryptology

noun
  • Secret or enigmatical language. 

  • The science or study of mathematical, linguistic, and other coding patterns and histories. 

  • The practice of analysing encoded messages, in order to decode them. 

slang

noun
  • The specialized language of a social group, sometimes used to conceal one's meaning from outsiders; cant. 

  • A curse word. 

  • A particular variety of slang; the slang used by a particular group. 

  • An item of slang; a slang word or expression. 

  • Language outside of conventional usage and in the informal register. 

  • Language that is unique to a particular profession or subject; jargon. 

  • Any long, narrow piece of land; a promontory. 

verb
  • To sell (especially illegal drugs). 

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