How to Explain Air Gun Blog to a Five-Year-Old

https://guns4sell877.tumblr.com/post/185286199498/25-surprising-facts-about-airgun-blog

A gun is actually a ranged weapon ordinarily meant to pneumatically discharge projectiles[1] that happen to be strong (most guns) but can even be liquid (as in water guns/cannons and projected drinking water disruptors)