Poker Hand Rankings:

Royal Straight flush
Ten, Jack, Queen, King, Ace of the same suit.

Straight Flush
Straight with all five cards in the same suit.

Four of a kind
Four cards of any one rank, together with any fifth card.

Full house
Three of a kind and a pair.

Flush
Five cards of the same suit, but not in sequence.

Straight
Five cards of two or more suits in sequence of rank, with the ace ranking either high or low in sequence.

Three of a kind
Three cards of the same rank plus two other cards which do not constitute a pair.

Two pair
Two cards of one rank, & two cards of another rank, and any fifth card which is neither of those ranks; it is referred to by the higher of the two pairs.

One pair
Two cards of the same rank, together with three other cards which do not combine with the other two to form any of the higher-ranking hands above