innominate vs nth

innominate

noun

  • An innominate bone 

adj

  • Having no name; anonymous. 

nth

noun

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

  • The item at position n in a sequence. 

adj

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

  • Occurring at position n in a sequence. 

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