Formosan vs Taiwanese

Formosan

noun
  • An inhabitant, resident, or a person of descent from Formosa. 

adj
  • Of or relating to Formosa or people of Formosa. 

Taiwanese

noun
  • A person from Taiwan; usually plural. 

name
  • The variant of Hokkien spoken in Taiwan, the native language of the Hoklo. 

adj
  • Of or pertaining to Taiwan. 

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