Individual saved image posts on Pinterest are called Pins.
A Pin is Pinterest’s basic content unit: a visual bookmark or idea that a user can save, create or discover. Pins commonly contain an image, a title, a description and a link to the website where the original content appeared. Users can save Pins to boards so they can return to an idea later.
Pinterest’s terminology comes from the physical act of pinning an image or note to a board. The service has expanded beyond static pictures, so Pinterest now also supports video Pins, product Pins, recipe Pins, article Pins and other formats. Even with those additions, “Pin” remains the general name for an individual piece of saved content.
Boards are not individual posts; they are collections that organize Pins. A feed is the stream where Pins appear, while a save is the action of adding a Pin to a personal board. That distinction makes “Pins,” rather than “Boards,” “Feeds” or “Streams,” the canonical answer.