Airflow vs DBT - What's the Difference?

Some pieces of commercial software become the word for doing that thing. And it's hard to know, but if you're not like deep in that area, then Like, you don't know the difference between this is a piece of software or this is a thing that you do. Well, yeah, because for me now I see like, this search may be relevant to recent activity airflow versus dbt. So I'm like, oh, if you just told me dbt is a competitor to airflow, I would have immediately known what that meant, right? Airflow is open source, right? Yeah. That's why it left Airbnb eventually because they're like, wait, why are we