The best replacement for commentary is editorial.

The best alternatives to commentary are rated as following:
★★★★★  editorial
★★★★★  comment
★★★  concrete detail
★★  news
★  commentary
★  analysis of text
★  commentator
★  reporting
  study bible
  bible dictionary
  summary
  word biblical commentary

Your alternative for commentary is not listed? Suggest!
Speaking about commentary, one probably shouldn't forget about ecommentary.

Other search terms related to commentary and their ratings are:
★★★★★ ecommentary
You have in mind a companion for commentary and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of commentary in all years. Click on graph for more.
commentary
editorial
comment