an alphabetical list of words relating to a specific subject, text, or dialect.

Page Authority

It is a score (on a 100-point scale) developed by Moz which predicts how well a specific page will rank on search engines. It is based off data from the Mozscape web index and includes link counts, MozRank, MozTrust, and dozens of other factors.

Page authority of more than 40 is considered to be good.