bubblegum vs gingiva

bubblegum

noun
  • A sweet chewing gum formulated to be stretchy so the chewer can blow bubbles with it. 

  • A type of pop music marked by sweetness, pep and charm (rather than depth or complexity). 

  • A light pink colour, like bubblegum. 

adj
  • Sweet, perky, or youthful. 

  • Tasting like bubblegum. 

gingiva

noun
  • The gum, consisting of the tissue surrounding the roots of the teeth and covering the jawbone. 

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