A ping pong ball is an object made of plastic which is a compound.
The first video game ever made was PONG! Pong was a revolutionary 2D version of tennis/ping pong, hence the name, PONG, from ping PONG.
Yes, the word 'ping pong' (or ping-pong) is a compound noun, a noun made up of two or more words that form a noun with a meaning of its own.
Well, an ancient being from centuries ago hit a ping pong ball with his or her paddle. When the ball hit the paddle it made a 'ping' sound. The ball rebounded of the paddle and hit the table, making a 'pong' sound. Ping pong was then born.
Among the only songs "about Ping Pong" are a 2007 Enrique Iglesias song called "Do You Know (The Ping Pong Song)." While not referring directly to the jargon of the game, the track has a sample of a ping pong ball bouncing in a steady rhythm throughout. The Raffi song "Bananaphone" also has a lyric "Ping-pong ping-pong, ping-pong, ping."
They are made in several different countries.
ping pong Ping pong.
Ping pong
pong (as in ping-pong), pung, or pinged.
ping pong!
The ping pong ball.
Ping Pong Balls