English to English

noun (n)

• an expert who observes and comments on something(noun.person)

  Synonym:
  observer
  

  source: wordnet30
• a writer who reports and analyzes events of the day(noun.person)

  Synonym:
  reviewer
  

  source: wordnet30
• One who writes a commentary or comments; an expositor; an annotator.(noun)

  source: webster1913