“Hippopotamus” is another one. It derives from the Greek words hippos (horse) and potamos (river) and this concept of river horse is present in many different languages:

• German: Flusspferd (lit. river horse)
• Dutch: Rivierpaard (lit. river horse)
• Finnish: Virtahepo (lit. stream horse)
• Danish: Flodhest (lit. flood horse)
• Chinese: 河马 (lit. river horse)
• Arabic: فرس النهر (lit. river horse)
• French, Spanish, Italian and Portuguese use variations of hippopotamus.

Tiny variations exist as well:

• Hungarian: Víziló (lit. water horse)
• Afrikaans: Seekoei (lit. sea cow)