There’s more than one way to make something plural in Korean, but the most common way is with the Particle 들. This makes any word before it (usually just a noun) into a plural. It can also be used after adverbs, and even phrases, which I also explain.

Another way to make something plural (specifically a person) is with the Particle 네. However, 네 is used differently and is specifically for something that’s a part of a group.