the vikings, like the japanese named individual swords of note. the tachi and katana are both curved swords, genus 'samurai swords' subclasses tachi and katana. simlar taxonomy for knives?
i'm also reminded of the made-up word 'falcata' used for spanish kopis-like sword after the mid 19c.
arroz by any other name would small as sweet.
'karud' may not have started off as a proper unique word, but it has gained a life of it's own. english especially is famous for loan words and made-up words, ambiguous words, etc.. unlike france, or quebec, where you may get fined for using the english word for an item that has a french equivalent in french conversation, we do not have that restriction here. i hope.