great array of spears and chariots
轕 centers on a grand, noisy display of military force: a great array of spears and chariots, suggesting a chaotic and impressive battlefield scene.
轕 combines 車 (chariot) with 葛, which likely contributes the sound. The exact historical development is uncertain, but the character is associated with the clamor of chariots and weapons.
The left side 車 is a chariot, and the right side 葛 looks like a tangled mass of vines. Imagine a battlefield where chariots and spears are as tangled and overwhelming as a thicket of vines, creating a great noisy array.
For カツ, picture a great array of chariots and spears crashing together with a loud 'katsu!' sound, like the clash of metal. The sharp 'katsu' noise cues カツ while the scene captures the chaotic display.