A rarity is something that is difficult to obtain, perhaps being scarce.
Rarity can also refer to:
https://en.wikipedia.org/wiki/Rarity
Rarity
Rarity's failed on her fashion design, what she gonna do now?
"As a professor of science, I assure you we did, in fact, evolve from filthy monkey-men."
Failed.
Rarity
Rarity's failed on her fashion design, what she gonna do now?