grieved, anxious
頊 centers on a state of emotional distress: feeling grieved or anxious. The two meanings are closely related, both describing a troubled inner state.
頊 is a rare character. It combines 頁 (head) with a left component that may be related to 玉 (jade) or a similar phonetic element, but the exact historical development is uncertain.
The right side 頁 suggests the head or mind. The left side looks like a person with a heavy burden on top. Picture a head weighed down by anxious thoughts, leading to grief.
For キョク, imagine a person so grieved they can only make a choked 'kyoku' sound, like a sob caught in the throat. The choked cry 'kyoku' matches キョク and reflects the anxious feeling.