يُطْلَقُ عَلَى الْأَقْوَالِ وَالْعَقَائِدِ وَالْأَدْيَانِ وَالْمَذَاهِبِ
The term is applied to statements, beliefs, religions, and doctrinal schools.
Calling a proposition ḥaqq assesses its content. Calling a doctrine ḥaqq has a wider scope involving its central claims and their correspondence with reality.
These uses share an orientation toward truth, but they are not identical in scope. One accurate statement by a person does not validate all of that person's beliefs.