gyro vs vulva

gyro

noun
  • A gyrocompass. 

  • An autogyro. 

  • Synonym of detangler. 

  • A gyroscope. 

  • A style of Greek sandwich commonly filled with grilled meat, tomato, onions, and tzatziki sauce. 

vulva

noun
  • A protrusion on the side of a nematode. 

  • The external female sexual organs, collectively. 

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