| clustering | the organising of search results when multiple listings appear for one website. Clustering also refers to the way search engines group different authorities on a certain topic together, showing their relationship. |
| user agent | Web crawling software. |
| profile density | Noun phrase. The ratio of measurable objects measured across a range of contexts. For example, Backlink profile density measures the ratio of inbound links to linking hosts. A spammy profile has a higher ratio than a natural profile (in which multiple links from the same host are more likely to be found). |
| knowledge graph/panel | A box that appears at the top of the search results on relevant queries. Queries that have a quick, easy answer. These are things like song search, lyric search, recipe search, and celebrity searches. |
| thin content | Content that adds little-to-no value to the visitor. |
