A flush contains any 5 cards of the same suit.A full house contains 3 matching cards of 1 rank and 2 matching cards of another rank.
If you have 4 aces, then no one can have any hand with an ace, so no royal flush is available. It can only be tied but not beaten by the royal flush of another suit. This hand includes a 10, Jack, Queen, King, and Ace of the same suit, one kind (all clubs, diamonds, hearts or spades).
Here are the winning poker hands, from highest to lowest: Then, memorize the different hands so you can easily recognize them. To start familiarizing yourself with the different hands, print out a 'cheat sheet' and study it. No matter what type of poker you play, the hands will always be the same. Learn the 10 basic 5-card hands and their ranking.