Display campaigns serve visually engaging ads on the Google Display Network. The Display Network helps you reach people as they browse millions of websites, apps and Google-owned properties (such as YouTube and Gmail). A display campaign is one campaign type available to you in Google Ads.
Google Search Ads are online advertisements that appear on Google search engine results pages. They are displayed to users who search for specific keywords or phrases related to the advertiser's product or service. The ads are designed to attract relevant traffic and drive clicks to the advertiser's website.