All of the nouns used (hammer, chain, furnace, brain, anvil) are explaining mighty things that the tiger is being compared to. The poem is simply saying that they are smart, speedy, and strong.
I hope this helped! If you have further questions don't be afraid to ask!
~Travis
Answer:
Depends on the situation
Explanation:
In the modern world evil is more common than many may think. Being good doesn’t come easy
That death has taken Joliet as his love and wishes to keep her