mandarin vs mandarin orange tree

mandarin

noun
  • A high government bureaucrat of the Chinese Empire. 

  • A pedantic or elitist bureaucrat. 

  • A small, sweet citrus fruit. 

  • A tree of the species Citrus reticulata. 

  • A senior civil servant. 

  • An orange colour. 

  • A pedantic senior person of influence in academia or literary circles. 

adj
  • Pertaining to or reminiscent of mandarins; deliberately superior or complex; esoteric, highbrow, obscurantist. 

mandarin orange tree

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