| cooperative advertising | Cooperative advertising is an advertising form where two or more businesses share the cost of an ad. |
| head term | A popular keyword with high search volume that is usually difficult to rank for. |
| redirect | A technique that sends a user (or search engine) who requested one webpage to a different (but equally relevant) webpage. There are two types of redirects: |
| trust | Generally applies to the history of a domain (e.g., whether it cites or features expert sources, builds a positive reputation, adheres to Webmaster Guidelines). |
| serp feature | Any result displayed on search engine results page thats not part of traditional organic result e.g. a rich snippet or sponsored ad. |
