disorder, confusion
紜 centers on a tangled, chaotic state: disorder and confusion, like threads that have become hopelessly knotted.
紜 combines the thread radical 糸 with the phonetic component 云, suggesting tangled threads as a metaphor for disorder.
Picture a messy pile of thread (糸) that has been carelessly tossed about, creating a scene of utter confusion and disorder.
For ウン, imagine a tangled ball of thread that makes you groan 'ungh!' in frustration: 'ungh' -> ウン, capturing the disorder.