erroneous vs undocumented

erroneous

adj
  • Deviating from the requirements of the law, but without a lack of legal authority, thus not illegal. 

  • Derived from an error. 

  • Mistaken. 

  • Containing an error; inaccurate. 

undocumented

adj
  • Not having official documentation required to legally enter, reside in, or work in a country. 

  • Lacking instructions or reference material. 

  • Not having official documents that provide identification, authorization, etc. 

noun
  • Synonym of undocumented immigrant 

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