dove vs go-between

dove

noun
  • A person favouring conciliation and negotiation rather than conflict. 

  • Term of endearment for one regarded as pure and gentle. 

  • A greyish, bluish, pinkish colour like that of the bird. 

  • A pigeon, especially one smaller in size; a bird (often arbitrarily called either a pigeon or a dove or both) of more than 300 species of the family Columbidae. 

verb
  • Strong simple past tense of dive 

go-between

noun
  • An intermediary or middleman. 

  • A shogi piece, used in chu shogi and larger shogi variants, that can move one step straight forward or straight backwards. 

How often have the words dove and go-between occurred in a corpus of books? (source: Google Ngram Viewer )