Hey! I hope you are doing okay, and here is my answer with my own words, all I hope is you turn my words into your own :)
Illustration is a very important text feature because it provides an imagery to the reader. Illustration is what makes a story more interesting. It provides a base for the imagination the reader can create in their mind.
Honestly I hope this is what the question meant. Good luck!
Kennings-a compound expression in Old English and Old Norse poetry with metaphorical meaning, e.g., oar-steed = ship.
I don't know if this is what you ment. xD
A stake is a piece of wood or other material, usually long and slender, pointed at one end so as to be easily driven into the ground as a marker or a support while reward is something of value given in return for an act.
Hope this helps