Advertising : la publicité
Advertising is the action of making potential customers aware of one’s product. Types of advertising can be television and radio commercials, advertisements in magazines and newspapers, billboards in the streets and on bus-stops, banner on websites.
An advertising agency : agence publicitaire
An advertisement (an advert, an ad) : une publicité
The small ads / classified ads : les petites annonces
Note: this word is a ‘faux ami’ – although its origin is in the French word avertissement, its meaning has changed. The correct translation of avertissement is ‘warning’.