Friendship in My Homebrew Setting

Sometimes an idea for my homebrew world will be so core to basic humanity that when I think to write about, I've already mistakenly thought to myself that I've written about it already. That was certainly the case for my core cultural values guide, and it's especially the case with friendship. I considered adding style of friendship to my to-write list several times but decided not to because I figured I must have already. Friendship is a basic part of life, even if not partaking in it is one's way of interacting with it. And as with differing approaches to romantic and sexual relationships, there are different approaches to friendship as well. Here's a profile on the styles of friendship of each culture in my homebrew setting.