flavor vs undertow

flavor

noun
  • The quality produced by the sensation of taste or, especially, of taste and smell in combined effect. 

  • One of the six types of quarks (top, bottom, strange, charmed, up, and down) or three types of leptons (electron, muon, and tauon). 

  • A substance used to produce a taste. Flavoring. 

  • The characteristic quality of something. 

  • A variety (of taste) attributed to an object. 

  • A kind or type. 

verb
  • To add flavoring to something. 

undertow

noun
  • A feeling that runs contrary to one's normal one. 

  • A short-range flow of water returning seaward from the waves breaking on the shore. 

verb
  • To pull down by, or as by, an undertow. 

  • To flow or behave as an undertow. 

  • To pull or tow under; drag beneath; pull down. 

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