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> power and authority
Should that really be on the list? Power is the capability to do something, authority is the permission to do it. Sometimes power and authority are near synonyms, such as in frontier areas with little government, but generally in a functioning, civilized society they are quite distinct.
At least we hope and pray that is the case.
But even without getting into political debates which could get really nuanced, can't authority mean capability in this context? I'm not a native English speaker so I'm not sure, but I don't find it odd. It is also possible that these two words have different (Anglo-Saxon vs French) origin, as most of the examples listed, and that their original meaning was synonymous (of course, I'm far too lazy and tired to check that now).