A backlink for a given domain is a link to that domain from a different domain.
The number of backlinks to a domain, or the number of inbound linking domains.
DomainRank or “Rank” is the ranking of a domain relative to all other domains based on DomainRank Score.
Or “Score”, for a given domain, is a number between 0 and 100 that represents the total “strength” or “authority” a domain has based on the number and nature of domains that link to it. It is analogous to “reputation”: A domain with a higher Score has more influence over the Scores of domains that it links to.
DomainRank Link Influence
Or “Link Influence,” for a given domain, is a number between 0 to 100 that represents the ability of a domain’s outbound links to affect the Score of domains that they link to. A domain’s Score is divided across all outbound links, so domains with many outbound links dilute their Link Influence.
An outbound link for a given domain is a link from that domain to a different domain.