The hippocampus is a small area area of the brain that controls short term memory. Hippocampus come the Greek words "hippos" and "kampos", literally "horse sea monster". Hippocampus is also the name of the genus that seahorses are in. Early scientists thought the part of the brain looked like a seahorse.

Karaoke is a Japanese word that derives from the words "kara", meaning empty, and "okesutora, meaning orchestra. Karaoke literally means "empty orchestra".