Four Deuces and a Joker
This is the highest hand in Deuces & Joker poker and it pays 10,000 coins. It must contain all four deuces (card with a value of 2) and the joker. You can only win this payout if you are playing for 5 coins. 
E.g. 

Natural Royal Flush
This is the highest hand in standard Poker and consists of the following cards:
A K Q J 10 all of the same suit. Please note this is a natural hand and cannot contain any wild cards. If some of the cards necessary for a Royal Flush are present along with some wild cards then this is called a Wild Royal Flush (see below.)

E.g. or 

4 Deuces
Any hand containing all four deuces (but not the joker as well) qualifies as 4 Deuces.
E.g. or 

Wild Royal Flush
This is any hand where one or more of the cards needed for a Natural Royal Flush have been substituted with one or more deuce. 

E.g. or 

5 of a Kind
This is a hand containing one or more wild cards (deuces or the joker) and a number of other cards of identical value. 
E.g. or 

Straight Flush
This is a combination of five sequential cards all of the same suit.
E.g. or 

Four of a Kind
This is a combination of four of the same cards.
E.g. or 

Full House
This is a combination of three cards of one denomination and two cards of another denomination.
E.g. or 

Flush
Five cards all of the same suit.
E.g. or 

Straight
Five cards in sequence of any suit.
E.g. or 

Three of a Kind
Three cards of the same denomination and two unmatched cards.
E.g. or