So in my research for my thesis, I learned a thing, and it’s not useful for my thesis so I’m posting it here instead.
Okay, so, everyone knows that the words canon and cannon are not synonyms, and if you’re like me it kind of makes your teeth grind when people talk about firing the canons or historical cannon. BUT HERE’S THE THING. The word canon is a direct lift from Latin, and it means law or rule. And so when heavy metal guns were developed and needed to be called something other than ‘that big murder machine over there’, the word cannon developed directly out of canon in the sense of “to lay down the law,” the same way Samuel Colt’s gun got called the Peacemaker. Likewise, ordnance comes directly from the Latin ordinance, which also got transferred directly into English as another synonym for ‘rule.’
And that is your totally useless historical fun fact of the day.
