Guoyu vs Mandarin

Guoyu

name
  • The standardized spoken Chinese language, also referred to as Standard Mandarin. The term remains in common use in the Republic of China (Taiwan) and colloquially in Hong Kong (along with Putonghua). In mainland China, Guoyu or Taiwan Guoyu is used to refer to Taiwanese Mandarin (standard), as opposed to mainland standard Mandarin. 

  • The language the Emperor of China spoke. 

Mandarin

noun
  • A branch of the Chinese languages, consisting of many dialects; Guanhua or Beifanghua. 

  • Standard Mandarin, an official language of China and Taiwan, and one of four official languages in Singapore; Putonghua, Guoyu or Huayu. 

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