Follower A user in a social media website that "follows" another user, meaning they receive notifications through their feed when the followed user posts a new post.
PFP Profile picture, i.e. avatar: the small image that appears next to your display name in your posts and profile page on social media.
Profile Picture An image that appears next to your display name on your posts and in your profile page in social media websites that is meant to represent you. Avatar. PFP.
Bio Short text description that appears on an user's profile page that is written by that user that serves as a way for the user to introduce themselves to others. It's also called "profile description."
What is the Difference Between Blocking and Muting? Blocking stops all interaction, muting only prevents you from seeing their posts.
Mute Action available on social media websites that is similar to blocking, but that doesn't prevent the muted person from sending messages to you.
Feed A list of posts that isn't static, that can be updated to display new posts according to some criteria and sorting algorithm, e.g. latest posts, best posts this week, etc.
Display Name Piece of arbitrary text that is shown (displayed) as your name on social media websites, i.e. as the name of your profile.