[Coda]

Originally Posted by Demonskid

I thought it was the gorilla that wasn't the monkey o3o

You're not wrong. Gorillas are a kind of ape. (So are gibbons, bonobos, chimpanzees, and humans.) Apes and monkeys are both primates, but apes aren't monkeys and monkeys aren't apes.

But in layman's usage, plenty of people use "ape" and "monkey" interchangeably, especially for the smaller ape varieties -- show most people a picture of a gibbon and they'll say "that's a monkey!" even though it's an ape.

So the point of comparison I'm making is that calling a cicada a "locust" is like calling a gibbon a "monkey." Technically wrong, but not too far off, and pretty common.