Casino Hold'em Poker is played with a standard 52 card deck, unlike other casino table games, such as blackjack, which is played with up to eight decks of cards. Just like Texas Hold'em the goal of Casino Hold'em is to make the best five card hand using a combination of two hole cards and five community cards.
In regular poker, each player is dealt a complete hand, while in Texas Hold 'em, players are dealt two "hole" cards and then use five community cards to make the best possible hand. As for which game is more fun, that is subjective and depends on personal preference.