Trending? Popularity?

By default, titles are filtered by trending. If I use the drop-down menu, I can filter by popularity.
What’s the difference? And there IS a difference. Try one, then the other, and the list is different.

Trending (say movies) as far as I know is based on: … with some movies not showing up (removed), because of current issues with the API.

Trending is what’s popular “now” and popularity would be the the “all time” rating, as it were. Just another way to view the database.