gweilo vs mayonnaise face

gweilo

noun
  • A white person in China, (particularly) a man; a ‘foreign devil’. 

mayonnaise face

noun
  • A person of northern, western, or central European heritage, especially in contrast to someone of southern Italian or Sicilian heritage. 

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