An advertising placard is a poster or billboard used to promote a product or service. There are several synonyms for this term, including advertisement, ad, poster, sign, banner, hoarding, billboard, and promotional display. Each of these words refers to a marketing tool that is designed to catch attention, promote brand awareness, and persuade customers to buy a product or use a service. These synonyms can be used interchangeably depending on the context, but they all point to the same goal of effective advertising. Regardless of the way it is called, an eye-catching advertising placard can be a powerful tool in the world of marketing.