bubble tea vs snack food

bubble tea

noun
  • Sweetened tea with milk and tapioca pearls, often including fruit juice, syrup and other ingredients. 

snack food

noun
  • Any other food consumed as a snack. 

  • A food traditionally or commonly consumed as a snack between meals. 

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