Identify the kennings used in lines 789-794 to refer to the dragon and to beowulf. What does the phrase used to describe beowulf emphasize about thr warrior

In Seamus Heaney translation of Beowulf into Modern English, he writes ...

But the earl-troop's leader was not inclined

To allow his caller to depart alive:

He did not consider that life of much account

To anyone anywhere. Time and again,

Beowulf's warriors worked to defend

Their lord's life, laying about them

As best they could with their ancestral blades.

Lines 789-795.

The kenning used to describe Beowulf is translated as "earl-troop's leader". And it emphasizes his noble rank, as the word "earl" originally denoted a man of hereditary noble rank (as opposed to a thane), who was the leader of the warriors who were fighting the monster.

On the other hand the kenning used to refer to his demon opponent is translated by Haney as "his caller".