official vs undocumented

official

adj
  • Discharging an office or function. 

  • Relating to an office; especially, to a subordinate executive officer or attendant. 

  • True, real, beyond doubt. 

  • Approved by authority; authorized. 

  • Of or pertaining to an office or public trust. 

  • Derived from the proper office or officer, or from the proper authority; made or communicated by virtue of authority 

  • Dubious but recognized by authorities as truth and/or canon. 

  • Listed in a national pharmacopeia. 

  • Relating to an ecclesiastical judge appointed by a bishop, chapter, archdeacon, etc., with charge of the spiritual jurisdiction. 

  • Sanctioned by the pharmacopoeia; appointed to be used in medicine; officinal. 

noun
  • An office holder, a person holding an official position in government, sports, or other organization. 

undocumented

noun
  • Synonym of undocumented immigrant 

adj
  • Lacking instructions or reference material. 

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

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

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