horse chestnut vs mahogany

horse chestnut

noun
  • The large nutlike seed of these trees. 

  • Any of several tree species of genus Aesculus, especially Aesculus hippocastanum, common in temperate northern hemisphere. 

mahogany

noun
  • Any of the trees from which such wood comes. 

  • A reddish-brown color, like that of mahogany wood. 

  • mahogany 

  • A Cornish drink made from gin and treacle. 

  • The wood of any of various tropical American evergreen trees, of the genus Swietenia, mostly used to make furniture. 

adj
  • Having the colour of mahogany; dark reddish-brown. 

  • Made of mahogany. 

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