appertain vs neighbour

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. 

neighbour

verb
  • To associate intimately with; to be close to. 

  • To be similar to, to be almost the same as. 

  • To be adjacent to 

noun
  • A person living on adjacent or nearby land; a person situated adjacently or nearby; anything (of the same type of thing as the subject) in an adjacent or nearby position. 

  • One who is near in sympathy or confidence. 

  • A fellow human being. 

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