riñonera
ES [riɲoneˈɾa] · Spanish for the belt bag · built on riñón (“kidney”), as Czech ledvinka is on ledvina
I met this one on a shop sign in Valencia, the summer everybody decided belt bags were allowed again. Riñonera. I could see the riñón sitting inside it - Spanish for kidney - and assumed somebody in marketing had an odd sense of humour.
Then it dropped. Czech calls the very same bag a ledvinka, and ledvina is the Czech for kidney. I had been wearing a small kidney round my waist my whole life without ever once hearing it.
The two words share nothing at all. Spanish riñón comes through Vulgar Latin from Latin ren, the kidney, which is also why a doctor says renal. Czech ledvina comes from an old Slavic word for the same organ. Neither language borrowed a thing from the other. What they share is the thought. The bag rides on your belt at exactly the height of the kidneys, so both reached for the organ and shrank it into a name. Spanish added -era, the ending it uses for holders and cases. Czech used a diminutive and turned ledvina into ledvinka, a little kidney. English looked at the same bag and named it after the backside instead.