anonymous vs nth

anonymous

adj
  • Of unknown name; whose name is withheld 

  • Without any name acknowledged of a person responsible 

  • Lacking a name; not named, for example an animal not assigned to any species. 

  • Lacking individuality. 

nth

adj
  • Occurring at a relatively large but unspecified position in a series. 

  • Occurring at position n in a sequence. 

noun
  • The item at position n in a sequence. 

  • The item in a relatively large but unspecified position in a series. 

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