An AdWords search term is a specific word or phrase that a user enters into a search engine, triggering the display of relevant advertisements. These terms are chosen by advertisers to target their ads to potential customers who are actively searching for products or services related to their business. AdWords search terms are a crucial component of pay-per-click advertising, as they determine when and where an ad will appear, and can greatly impact the success of a campaign. Advertisers can use various tools and strategies to research and select the most effective search terms for their ads, ultimately driving more traffic and conversions to their website.