Ghostery is a security and privacy application that offers users a variety of tools and features to help them protect their online activities. It is a web browser plugin that blocks trackers, ads, and other malicious scripts from accessing users' information. It also allows users to customize their settings so that only certain trackers, ads, and scripts are blocked. Ghostery also allows users to view and analyze the trackers, ads, and scripts that are attempting to access their information. Additionally, it provides users with detailed information about each tracker, ad, and script, including its source, owner, and purpose. Ghostery also provides users with the ability to opt-out of certain trackers, ads, and scripts. Overall, Ghostery is a great tool for users to protect their privacy, control their online activities, and maintain their anonymity online.
The emphasis of one is to block ads, the other is to block trackers. There may be some overlap, but you won't get both functions from either program.