there is also Real/Reais --money in Brazil that was a replacement for the previous hyperinflated currency
and the cheese on most frozen pizzas here is "Made with Real™ cheese" which always makes me laugh.
Discussion
and the word "realm", another related word, an old word for kingdom
oh yeah, not to forget
"rei" (ray) means king, and "reina" means queen. and of course "reign" means a period of dominance for something.
i'm pretty sure those words have a link to the common names, also
it's kinda interesting how the word "rei" and the word for a beam of light are the same... and that goes towards the notion of "god rays", a modern expression based on some funny old realism paintings from the 50s of scenes from the bible
i find it endlessly fascinating how these things connect together, so much that it distracts me from doing work, but my work is engineering and this sensitivity to unseen connections helps a lot