What is the difference between an advertisement and a commercial?

An advertisement is a broader term that encompasses any promotional message designed to inform or persuade consumers about a product, service, or brand, and can appear in various formats such as print, online, or broadcast media. A commercial specifically refers to advertisements that are broadcast on television or radio. While all commercials are advertisements, not all advertisements are commercials, as they can also include billboards, print ads, and digital banners.