I was trying to look up the word "black powder" in Websters one day and it doesn't exist. Look up "gunpowder" and they give a description of an explosive consisting of saltpeter, charcoal, and sulfer.
Likewise, most photos of antique powder containers I have seen are labeled "gunpowder" and not "black powder".
Is "black powder" a modern term for the explosive formerly known as gunpowder to set it apart from smokeless powder or did the term "black powder" actually exist in the pre-smokeless era?