https://rhiannonkirin.bandcamp.com/album/zen
Inherited from Ottoman Turkish اوزن (üzen, özen, “pains, pains-taking”),[1][2] from اوز (öz, “pith, essence, the self”), from Proto-Turkic *ȫŕ (“inside, the essential part, the self”),[3][4] morphologically öz + -en.
https://en.wiktionary.org/wiki/%C3%B6zen
Inherited from Ottoman Turkish اوزن (üzen, özen, “pains, pains-taking”),[1][2] from اوز (öz, “pith, essence, the self”), from Proto-Turkic *ȫŕ (“inside, the essential part, the self”),[3][4] morphologically öz + -en.
https://en.wiktionary.org/wiki/%C3%B6zen