A phrase given by Tolkien as an example of how a pair of nouns would be declined into the subjective case, with only the last noun inflected (SD/429). The entire noun phrase would be the subject of the sentence. It is contrasted with Ar-Pharazônun kathuphazgân, where the first noun is inflected instead. This would be a the sentences “Ar-Pharazôn (is) a conquerer”.
ar-pharazôn kathuphazgânunKing Ar-Pharazon the Conqueror