Poker hands are always five cards. Any hand in one category in the list beats any hand in any category below it. For example, any straight flush beats any four of a kind; any flush beats any straight.
An ace-high straight flush is known as a royal flush, and is the highest ranking standard poker hand.
Five cards in sequential rank, in at least two different suits. The highest straight will win.
Four of a kindChange
Four cards of the same rank combination. If two or more players share the same four of a kind, then the fifth card kicker determines the winner.
The combination of three of a kind and a pair. If two or more players have a full house then the player with the best three of a kind wins. If those are the same then the player with the best pair wins.
All five cards are of the same suit, but without sequence. If two of more players share a flush then the player with the highest card (all the way to the fifth card if necessary) in the flush wins.
Five consecutive card ranks in two different suits at least. There are no kickers with straights since all five cards are needed to make the hand.
Three of a kindChange
Three cards of the same rank. If two or more players share the same three of a kind hand, the two remaining kickers determine the winner.
Two cards of the same rank plus two cards of another rank. If two or more players have two pair, then the highest pair determines the winner. If they have the same two pair then the fifth card kicker determines the winner.
Two cards of the same rank. If players have the same pair, then the highest of the three remaining cards (known as kickers) determine the winner.
Poker hand made of any five cards that don’t meet any hand requirements. If players have the same high card, then the second highest card (and so on) will determine the winner.