black tea vs flowering tea

black tea

noun
  • Tea leaves which have been "fermented" (actually, oxidized) before drying to enhance their flavour (cf. green tea). 

  • A cup of tea served without milk. 

flowering tea

noun
  • A type of tea originating in China consisting of a bundle of dried tea leaves wrapped around one or more dried flowers. 

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