large, great
奘 centers on largeness and greatness in scale or stature. It describes something physically big or metaphorically grand.
奘 combines 壯 (strong, robust) with 大 (big), reinforcing the idea of largeness or greatness. The exact historical development is uncertain, but the components consistently point to size and strength.
A strong warrior (壯) standing on a big base (大) looks large and great. Picture a towering figure with a robust upper body and a wide stance.
For ジョウ, imagine a giant Joe who is so large he fills the room: Joe -> ジョウ, and his size matches the kanji's meaning of 'large'.