Can I use a verizon iPhone 5 sim card in an unlocked at&t iPhone 4s?

My iphone 5 was stolen while abroad but i had put in a foreign SIM card so i still have the verizon iphone 5 sim card sitting at home.a friend offered me an unlocked at&t iphone 4s. Will it work if i put the sim card in?

Added (1). I understand the SIM cards are different in terms of physical size but there are adapters for that. I'm asking will it work with an adapter (so the sim card will fit the phone but will it work)? Sorry for not being clear

The iPhone 5 sim card is a nano sim card which will not fit in the iPhone 4S. You will have to go to Verizon and they should be able to give you a micro sim instead