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. 
E.g. or 

4 Deuces 
This is any hand containing all four deuces (card of value 2).
E.g. or 

Deuces Royal Flush

This is a hand where one or more deuce has been used to complete a Royal Flush.
E.g. or 

5 of a Kind
This is a hand where all five cards have the same value. This implies the presence of at least one deuce but no more than 3. 
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 denomination.
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.