I just thought I'd make this because I'm tired of people thinking they're the same thing when they're super different. Hopefully this will make people realize and make a page just for indie and put indie kid as a subgenre of kidcore or something.
Indie to me is very late 90s-early 2000s vibes. It was originally all about being yourself and it was a lot more alternative in today's standards. The original indie was really close to grunge in a lot of ways as well as vintage and stuff. It also has a lot more darker colours and some brighter colours are more faded if that makes any sense?
2. Indie Kid
This aesthetic is VERY similar to kidcore because of its bright colours and childlike themes, but I guess the colours of Indie Kid are slightly less about vibrance and more about just being very highly saturated. In my opinion, (if this is your aesthetic no hate to you) this is more of a "basic" aesthetic, fitting in closely with VSCO people and softie.
These 2 aesthetics are more different than I realized now that I've written this down lol! But that's just my input on Indie and Indie kid.