Feed is the option where you get content from other users you follow,

Podium is a collection of regional and global content but since the app recently launched it does not have much content,

ideally you should be getting a combination of global and regional content on the podium segregated by content type (art, food, life .. ) in the android version there is single Podium and also content should be interesting enough and should not contain personal images/selfies to make it up to Podium.