Page Authority (PA) is similar to Domain Authority but focuses on the ranking potential of individual pages rather than the entire domain. While DA gives a holistic view of a domain's strength, PA helps in understanding the strength of specific pages within that domain.

The concept of the Root Domain is crucial for understanding Domain Authority, as it refers to the main domain under which all subdomains and pages reside. Link Building, which involves acquiring hyperlinks from other websites to your own, directly impacts DA by increasing the number of linking root domains.

SEO (Search Engine Optimization) is the broader strategy to improve a website's visibility on search engines. Domain Authority is a vital part of SEO, and Backlink Analysis is a practice within SEO that examines incoming links to improve or understand DA. Backlink profiles, which include metrics like Link Quality and Link Equity, are analyzed to understand their impact on DA.

Keyword Difficulty refers to how hard it is to rank for a specific keyword. Higher Domain Authority can make it easier to rank for competitive keywords. Link Quality is a measure of how valuable a backlink is, and high-quality links can boost DA more effectively than low-quality ones.

Referring Domains are the external websites that link to your domain. Having a high number of referring domains can positively impact your DA. Link Velocity refers to the speed at which a website gains backlinks over time; a natural and consistent link velocity contributes positively to DA.