appertain vs bear on

appertain

verb
  • To belong to or be a part of, whether by right, nature, appointment, or custom; to relate to. 

  • To belong as a part, right, possession, attribute, etc. 

bear on

verb
  • To be relevant to. 

  • To influence, have an effect on. 

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