feel pain, suffer
偬 centers on the experience of pain and suffering, both physical and emotional.
偬 combines 亻 (person) with 怱, which likely contributes the sound and relates to the heart/mind, suggesting a person experiencing inner distress.
A person 亻 beside 怱, a shape that suggests a hurried or distressed heart. Picture someone clutching their chest in pain.
For ソウ, imagine a person suffering and letting out a low, drawn-out 'sow' sound of pain: sow -> ソウ.
hurrying