Chin vs Kuki language

Chin

name
  • Synonym of Zo: a language of Burma. 

  • A surname from Hakka. 

  • A hamlet in Alberta, Canada. 

  • A tribe in Burma. 

  • A state of Burma 

Kuki language

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