turbosupercharger vs twincharger

turbosupercharger

noun

  • A twincharger, a combination of a supercharger and a turbocharger. 

twincharger

noun

  • A combination of a supercharger and a turbocharger. 

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