> For the complete documentation index, see [llms.txt](https://universal-basic-asset.gitbook.io/universal-basic-asset/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://universal-basic-asset.gitbook.io/universal-basic-asset/user-system/relationships.md).

# Relationships

Invitation refers to the vertical associations created by UBA user invitations.

Interaction refers to the horizontal associations formed by users that team up across different vertical association structures.

<figure><img src="/files/fF2KENWYvXGqMtBTFE7K" alt=""><figcaption></figcaption></figure>