Recently, I came across different medias depicting the same weapon: what looks like a lance blade with a staff of an approximately equivalent length. The most known example would be the spear of Leonidas in Assassin's Creed:
Ancient weapon categorization is a complex topic, especially when you don't even know the name of what you're trying to describe. I don't even know under which category it would fall: neither a dagger, nor a spear or a sword.
I looked around but found no decisive answer: I'm trying to know if this type of weapons existed (and its name if so) or if it's just a pop-culture creation that "looks cool".
Cookie point if you can explain to me what would be its usage (if it existed) as it looks (from a neophyte point of view) rather impractical compared to other, more classic types of weapons.