Anchors tool lists all anchors of the researched domain’s backlinks.
Anchor Text - the visible, clickable text in a hyperlink.
Referring Domains - the number of referring domains that have backlinks with a particular anchor text
Backlinks - the number of backlinks with a particular anchor text, segmented into three categories: total, deleted, nofollow (non-indexed pages).
Estimated Link Flow Metrics - average flow metrics of backlinks with a particular anchor.
Serpstat Page Rank (SPR) - a score on scale from 0 to 100 which measures the page authority. Serpstat Page Rank predicts how influential a URL might be based on the number of pages linking to it. Links are not measured with equal weight, so a strong link will have a relatively stronger influence on URLs.
Serpstat Trust Rank (STR) - a score on scale from 0 to 100 which measures the site authority based on how authoritative and trusted are the sites linking to the site in question. A site closely linked to trusted site can obtain higher trust rank scores, while a site which has some questionable links would get a much lower score.
It’s believed that search engines may consider backlinks with commercial anchor text (like “buy laptop”) as spammy or bought ones. Try to avoid using a lot of commercial anchor text - you can easily check your link profile with Serpstat.