com‧men‧ta‧ry plural commentaries [uncountable and countable]
a spoken description of an event, given while the event is happening, especially on the television or radio:
Commentary is by Tom Ferris.
We'll be bringing you full commentary on the game between Notts and Brescia.
running commentary (=a continuous description of something)
something such as a book or article that explains or discusses a book, poem, idea etc:
to be a sign of how bad a particular situation is:
The incident was a sad commentary on British football.