Bit confused on the “About” section of your Account/Profile and the “About” page. Which is shown? Does one override the other?

Bit confused on the “About” section of your Account/Profile and the “About” page. Which is shown? Does one override the other?
This About is a plain-text blurb that ideally should be 1-2 lines. Much like Twitter or Instagram’s bio field. The About page, just like any other page, for your mb can be used to pen your detailed autobiography 🙂
It's a little confusing, but what it means is that the "about me" will show up on your profile like @pratik said, and it will also show up as the default "About" page on your blog. But you can add a new "About" page to include anything longer or with markup.