colleague vs neighbour

colleague

verb
  • To unite or associate with another or with others. 

noun
  • A fellow member of a profession, staff, academic faculty or other organization; an associate. 

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 colleague and neighbour occurred in a corpus of books? (source: Google Ngram Viewer )