A dapper chap without a doubt
The Spartan alleged short sword is a bit older than that, I think.The original "short sword" AFAIK was a longsword held in halfsword. Liechtenauer's "kurtzen swert." You shorten it relative to its primary length. So as Knaight says it's all relative. A small sword is smaller than a rapier. A grande epee de guerre is larger than typical arming swords. "Short" only means shorter than ____.
But yeah, same words can mean different things in different contexts. A short bronze age sword is not necessarily much like a short Renaissance sword. If the aim is to create a system of universal abstractions, it's best to begin by defining your terms in their own context independent of any historical reference. What do you mean when you say "short sword"?
PS. Or "shortsword", I suppose, although to my mind that orthography denotes a particular type of thing rather than a descriptive category of things. Like how a "long sword" is just a sword that's notably long, but a "longsword" is a somewhat specific kind of long sword... or how a "smallsword" is not just any kind of "small sword".