An emblem fuses the symbol and the lettering into a single badge or crest, so the two can never be pulled apart — unlike a lockup, which keeps icon and wordmark as separate pieces that happen to travel together.
It's the traditional choice for universities, sports teams, government bodies and old breweries — anywhere that wants to signal authority, heritage or belonging. The usual construction is a circular or shield outline with text set on a curve and a central pictorial device — an animal, a tool, a landmark — anchoring the middle.
Because it's drawn with that much detail, an emblem loses legibility fast at small sizes. In practice, teams usually cut a simplified version — often just the central device — for favicons and app icons, and ship it alongside the full emblem.
When to use
Use it when the brand wants to project authority, heritage or belonging — schools, teams, long-established businesses. Prepare a simplified version for small icon uses.