Royal 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 the same number or face value (“quads”). 
Full House:
Three cards of one number or face value and two cards of another number or face value. If more than one player has a full house, the full house with the highest ranking three of a kind (“trips”) wins. 
Flush:
Five cards of the same suit. If there is more than one flush, the hand with the highest card(s) wins. 
Straight:
Five cards in sequence. Cards can be in any suit. An Ace can be used in the highest straight (10, J, Q, K, A) and the lowest straight (A, 2, 3, 4, 5). 
Three of a Kind:
Three cards of the same number or face value (“trips”). 
Two Pair:
If two players have two pair, the hand with the highest pair wins. If they have the same high pair, whoever has the second highest pair wins. If they have the same two pair, whoever has the highest fifth card (“kicker”) wins. 
One Pair:
Two cards of the same number or face value. If two players have the same pair, the highest outside card(s) wins. 
High Card:
The hand with the highest card(s) wins.