actual vs observed

actual

adj
  • Existing in reality, not just potentially; really acted or acting; occurring in fact. 

  • Used as intensifier to emphasise a following noun; exact, specific, very. 

  • relating to a person's acts or deeds; active, practical 

noun
  • Reality, usually with the definite article. 

  • something actually received; real receipts, as distinct from estimated ones. 

  • a radio callsign modifier that specifies the commanding officer of the unit or asset denoted by the remainder of the callsign and not the officer's assistant or other designee. 

observed

verb
  • Exceptionally celebrated on a date other than the usual date. 

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