flavorless vs nonvirile

flavorless

adj
  • Without flavor. 

  • Flat; lacking character or definition. 

  • Lacking taste or flavor; without seasoning, spice, or discernible qualities of taste. 

nonvirile

adj
  • Not virile. 

  • Pertaining to a grammatical gender used in some Slavic languages for plurals of masculine animate, masculine inanimate, feminine, and neuter nouns, i.e. for all groups that do not include men or personal masculine nouns. 

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