| crawl errors | Crawl errors are errors that occur during the crawling process by a search engine bot or other crawler. Errors could include DNS errors, server connectivity issues, or errors caused by the unavailability of a resource such as the Robots.txt file. |
| dynamic retargeting | Dynamic retargeting allows you to show an ad to customers who have visited your site. The images and or information is shown in this ad are identical to what the visitors looked at while they were on your site. |
| h4 | a minor, MINOR heading. I would describe it as a whisper in the code. See the explanation below for how H1s, H2s, and H3s look on a page. |
| google possum | A major algorithmic update released in September 2016 to build on the Google Pigeon update. It gives even more relevance to the location of the searcher. |
| deep linking | Deep linking refers to the process of using a hyperlink within your website to link to a specific piece of content or area on your website. A few examples would be linking to a certain webpage like a blog or an image on the site. |
