Brexiteer vs Leaver

Brexiteer

noun

  • Someone who supports Brexit, the United Kingdom's exit from the European Union. 

  • Usually in plural: a holder of any of the posts in the British Cabinet tasked with negotiating the country's exit from the European Union. 

Leaver

noun

  • Someone who supports Brexit, the United Kingdom's exit from the European Union. 

name

  • A surname. 

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