harmless vs nonvirile

harmless

adj
  • Not intended to harm; inoffensive. 

  • Incapable of causing harm or danger; safe. 

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 harmless and nonvirile occurred in a corpus of books? (source: Google Ngram Viewer )