china vs oppo

china

noun
  • Synonym of porcelain, a hard white translucent ceramic made from kaolin, now (chiefly US) sometimes distinguished in reference to tableware as fine or good china. 

  • Synonym of China rose, in its various senses. 

  • A kind of drum cymbal approximating a Chinese style of cymbal, but usually with Turkish influences. 

  • Chinaware: porcelain tableware. 

  • Synonym of China root, the root of Smilax china (particularly) as a medicine. 

  • Synonym of mate (rhyme of china-plate). 

oppo

noun
  • A friend, associate or colleague. 

  • Research into one's opponent's family, friends, and past, which aims to uncover activities or interests which embarrass or discredit them. 

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