| heading tags | HTML tags that help explain the content hierarchy on a webpage. H1 is the most important and H6 is the least important. Best practice is to only have one H1 tag per page, but multiple H2-H6 tags are ok if they make sense within the content hierarchy. |
| link atrophy | the loss of backlinks to your website over time. |
| referring domains | otherwise known as a ref domain, a referring domain is a domain that a backlink is coming from. |
| root domain | The root domain of a website is the shortest possible formation of a domain name/URL, not including a subdomain. For example website.com is the root domain of http://www.website.com/. |
| conversion rate optimisation | (CRO) Conversion Rate Optimisation, usually shorted to CRO, is the practice of optimising the user experience of websites and landing pages to achieve the most goals/revenue. |
