What do the alliteration and kenning in lines 474-478 of this old English poem help convey?

The alliteration and kenning in lines 474-478 of the old English poem help convey a sense of mourning and devastation as the speaker laments the loss of his lord and the harshness of fate. The repetition of sounds and the figurative language in the kenning emphasize the speaker's deep grief and the significance of the lord's death.