1) Mistaken Identity and/or Misconceptions
2) Reason versus Emotion
3) Fate and the Fantastical
4) Idyllic Settings
5) Separation and Reconciliation
6) Happy Endings
The answer would be metaphor.
A metaphor is a figure of speech that describes an object or action in a way that isn’t literally true, but helps explain an idea or make a comparison.
Here are the basics:
<span><span>
A metaphor states that one thing is another thing</span>It equates those two things not because they actually are the same, but for the sake of comparison or symbolism<span>.
If you take a metaphor literally, it will probably sound very strange (are there actually any sheep, black or otherwise, in your family?)
</span><span>Metaphors are used in poetry, literature, and anytime someone wants to add some color to their language.
Hoped I helped!
</span></span>
Explanation:
John Green
Quote by John Green: “There is hope, even when your brain tells you there isn't ”
Using the formula:

Which is, 3.14 x 2^2 (radius is half of diameter)
Which equals 12.56.