semantics vs semiotics

semantics

noun
  • The study of the relationship between words and their meanings. 

  • A branch of linguistics studying the meaning of words. 

  • The individual meanings of words, as opposed to the overall meaning of a passage. 

  • The meaning of computer language constructs, in contrast to their form or syntax. 

semiotics

noun
  • The study of signs and symbols, especially as means of language or communication. 

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