Arudha means the “risen one”. While one’s abilities and intelligence live inside one and one’s scores in examinations, awards and trophies etc “rise” in the material world out of the abilities and intelligence. The “risen ones” are what manifest materially and what the world can see. So the 5th house shows real abilities and intelligence, while the arudha of 5th shows awards, trophies and scores in contests etc. Arudha of each house shows what exists physically which the world can see and which rises from the matters of the house.