noun
plural coins
[count] :a small, flat, and usually round piece of metal issued by a government as money
the other/opposite/flip side of the coin
a different way of looking at or thinking about a situation
toss/flip a coin
to decide something by throwing a coin up in the air and seeing which side is shown after it lands
two sides of the same coin
two things that are regarded as two parts of the same thing
verb
coins; coined; coining
[+ obj] to create (a new word or phrase) that other people begin to use
The phrase to coin a phrase is sometimes used in a joking way to say that you know you are using a very common expression.
to make (money in the form of coins)
coin it
or coin money
Brit informal :to earn a lot of money quickly or easily