> 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="https://4054989518-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FJQVAYaGmiGBoV1fzXAhY%2Fuploads%2FfsiGAVQXwG4tBJMQAUTl%2Fimage.png?alt=media&amp;token=95fcd35f-c6b3-4549-9b22-97e04094ce49" alt=""><figcaption></figcaption></figure>