two sides of the same coin

English

two sides of the same coin pl (plural only)

Two aspects of the same thing.
Low income and poor health are two sides of the same coin.
Two things that superficially appear to be opposites but are fundamentally similar.
- 2008, BioWare, Mass Effect, Redwood City: Electronic Arts, →ISBN, →OCLC, PC, scene: Eden Prime:
  Shepard: What's wrong with your assistant?
  Dr. Warren: Manuel has a brilliant mind, but he's always been a bit... unstable. Genius and madness are two sides of the same coin.
  Dr. Manuel: Is it madness to see the future? To see the destruction rushing towards us? To understand there is no escape? No hope? No, I am not mad. I'm the only sane one left!
  Dr. Warren: I gave him an extra dose of his meds after the attack.