Overt verb: دَخَلَ زَيْدٌ ضَاحِكًا — dakhala is explicitly present.
Verbal meaning: زَيْدٌ فِي الْبَيْتِ جَالِسًا — the location conveys an understood sense of being situated.
Both ḥāl words express a state; the difference lies in whether the governor is expressed or understood.