phonology vs semantics

phonology

noun
  • The way sounds function within a given language; a phonological system. 

  • The study of the way sounds function in languages, including phonemes, syllable structure, stress, accent, intonation, and which sounds are distinctive units within a language. 

semantics

noun
  • 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. 

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

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