* Piano (pronounced pee-ah-noh) - a musical instrument
* Photo (pronounced foh-toh) - short for photograph
* Radio (pronounced rah-dee-oh) - a device for receiving and transmitting radio waves
* Auto (pronounced oh-toh) - short for automobile
* Solo (pronounced soh-loh) - a musical performance by one person
* Kilogrammo (pronounced kee-loh-gram-moh) - a unit of weight
* Cacao (pronounced kah-kah-oh) - a tree that produces cocoa beans
These words are all borrowed from other languages, such as Italian, Greek, or English. However, they are now fully integrated into the French language.
It's important to note that while there are a few French words that end with "O", they are relatively rare. Most French words end with a vowel other than "O", such as "E", "A", "I", or "U".