What is a 'diamond in the rough'?

I'll mark ! what are some examples of metaphors and symbolism in the song "lose yourself" by eminem?

4.in those days the church was not merely a thermometer that recorded the ideas and principles of popular opinion; it was a thermostat that transformed the mores of society. •type of figurative language: •meaning of figurative language: •effect on tone and mood: •effect on audience: choose out of these: hyperbole, irony, historical question, paradox, allusion,metaphor,personification,symbolism and simile

What can readers conclude about allison check all that apply