Since Kant the two phrases have become purely adjectival (instead of adverbial) with a technical controversial sense, closely allied to the Aristotelian, in relation to knowledge and judgments generally.
Hudson's prose throughout is densely adjectival and often indiscriminate.
It is from the verb " sever " but it is past, passive, and adjectival, i.e. a perfective passive participle.
The Syriac noun has three states - the absolute (used chiefly in adjectival or participial predicates, but also with numerals and negatives, in adverbial phrases, &c.), the construct (which, as in Hebrew, must be immediately followed by a genitive), and the emphatic (see above).
For more examples see noun phrase, adjectival phrase and adverbial phrase.