What is the overall reaction order for the following rate law:

\(\rm rate=k[NH{4}^{+}][NO{2}^{-}]\) (read as: \(k\) times the concentration of \(\rm NH{4}^{+}\) times the concentration of \(\rm NO{2}^{-}\))
2 (ACCEPT: \(\rm 2^{nd}\) ORDER)