Such an interesting post, thank you. I find it so interesting and important to be reminded of this every now and then. To recall something might have a name but that doesn't mean everybody would call it the same or describe a thing the same way. Some people might not ever have come across a certain object and give it its own name. Something might have happened to that object and changed it. And sometimes we intentionally use it in a way that isn't the object's purpose.

I often come across this in my job too when people speak about colour. Perception and personal cognition can differ so greatly here too, fact aside that lots of people have only one word for all shades of blue (which is just blue for them). The same with red, and some say magenta is pink and violet is pink and salmon is pink too. Some might even find a yellow isn't yellow but lime or orange, depending on the hue. Or even depending on their monitor calibration. It leads to lots of confusion, and sometimes brilliantly comical situations too. Like a few years ago when someone wanted to sell a dress on the internet. They took a photograph and posted it. Some people perceived the colour as white and gold, some as blue and black, depending both on how their monitors showed it and also by sole personal perception differences when they looked at the same screen. It always invites me to philosophize afterwards. Is a cup still blue if a person perceives it as green or simply calls it that way? And how do I apply this to writing a story, maybe even with multiple characters speaking of the same cup, some saying it's blue, some insisting it's green? And what about a colour-blind character? And so on.

And the axe mention reminds me of Aragorn's sword. It's his ancestor's sword, of course, but is it still his ancestor's sword after the Elves reforged it? Or is it a new one? Or perhaps both? :)