black tea vs hemp

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. 

hemp

noun
  • Various products of this plant, including fibres and the drug cannabis. 

  • A tall annual herb, Cannabis sativa, native to Asia. 

  • The gallows. 

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