neighbour vs proponent

neighbour

noun
  • One who is near in sympathy or confidence. 

  • 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. 

  • A fellow human being. 

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

  • To associate intimately with; to be close to. 

  • To be adjacent to 

proponent

noun
  • One who supports something; an advocate 

  • One who makes a proposal or proposition. 

  • One who propounds a will for probate. 

adj
  • Making proposals; proposing. 

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