chariot
轒 centers on a chariot, specifically a type of war chariot used in ancient China. The meaning is narrow and concrete, referring to the vehicle itself.
轒 combines 車 (vehicle) with 賁, which likely contributes the sound. The character is a phono-semantic compound for a type of chariot.
The left side is a vehicle 車, and the right side 賁 looks like a decorated or ornate structure. Picture an ancient war chariot with elaborate fittings rolling into battle.
For フン, imagine the fun of riding a chariot: fun -> フン, and the chariot races across the field.