속? 안? What’s INSIDE? | Korean FAQ

Both 안 and 속 mean “inside,” but they’re not used for the same things.

The really quick answer is “use either,” but an even quicker answer is “just use 안.” However, the real answer is a bit longer, and requires knowing what kind of “inside” you’re referring to. Fortunately it’s not difficult, and I explain all of their differences in this 7 minute long episode.