Badge
Badge is a small, often circular marker displaying a numeric count or short label, commonly used to notify users of new messages or items needing attention.

A badge is a small, circular or pill-like indicator placed on an icon or text to highlight a noteworthy count or status. Often used for unread messages or pending tasks, badges subtly convey changes or updates without triggering a full notification event.
They excel at in-place awareness, prompting the user to check for new content or take minor actions. By displaying real-time numeric tallies or short labels, badges encourage engagement while staying out of the way, letting people address them as they see fit.