What is the ranking of two pairs in poker and how does it compare to other hand combinations?

In Poker, two pairs is a hand ranking higher than one pair and lower than three of a kind. It consists of two cards of one rank, two cards of another rank, and one card of a different rank. This hand is beaten by three of a kind, a straight, a flush, a full house, four of a kind, a straight flush, and a royal flush.