# Browser Synthetics Disambiguation

There are several similar-sounding terms within ThousandEyes, only some of which are directly related to browser synthetics.

**Web layer:** Browser synthetics is part of the larger family of web-layer tests. The other web-layer tests are HTTP server tests, FTP tests, and [API tests](https://docs.thousandeyes.com/product-documentation/api-test/). The HTTP server and FTP test types are described under [Internet and WAN Monitoring](https://docs.thousandeyes.com/product-documentation/internet-and-wan-monitoring).

**Browser Synthetics vs. BrowserBot:** Within this documentation, *browser synthetics* refers to two test types - page load and transaction - and to the views and data produced by those test types on the ThousandEyes platform. These tests rely on a set of software components that are collectively referred to as BrowserBot, and are installed from the **te-browserbot** Linux package. These components run on the ThousandEyes Cloud and Enterprise Agents. For information on BrowserBot and the **te-browserbot** package, see [What Is BrowserBot?](https://docs.thousandeyes.com/product-documentation/global-vantage-points/enterprise-agents/what-is-browserbot).

**Endpoint agent browser extension:** The ThousandEyes Endpoint Agent measures real-time user experience, rather than running scheduled synthetic browser interaction tests. Endpoint agents support a few scheduled network tests, but not the browser synthetics tests discussed in this section of the documentation.