The profile image is the smaller, square image that sits on top of the banner/"cover" image. This is the image that will show up in people's feed when you make a post–it identifies you as you.
Cover images are banners for your page. They’re wider, horizontal shots. They should:
Tell the story of YOUR area with a great visual
Promote an upcoming event or occasion related to your area.
Use a great image to tell your story.