green tea vs manuka

green tea

noun
  • A beverage brewed from green tea leaves. 

  • Leaves of the tea plant which are treated with steam or roasted to denature the enzymes that cause the leaves to darken and change taste. (Without this step they would become oolong tea or black tea). 

manuka

noun
  • The wood of this plant. 

  • Leptospermum scoparium, a shrub or small tree native to New Zealand and southeast Australia. 

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