Because instrumental goals and resources are instrumentally and hierarchically related, they are two sides of the same coin.
Individual autonomy is the core concept of a liberal society, in which personal choice and interpersonal competition are two sides of the same coin.
Death and the jester's (the theatre's) order are two sides of the same coin.
Increasing institutionalisation and diminishing autonomy may be two sides of the same coin.
These are two sides of the same coin.
These are merely two sides of the same coin!
After much honing and debate, they reduced to five, and even then four of these five really reflect two sides of the same coin.
On the tendency view, theory and econometrics are two sides of the same coin.