Rarely in blackjack there is a rule that if the player reaches a certain number of cards, usually 5 to 7, without busting, the player will automatically win. This is called a "Charlie." If the player automatically wins with 7 cards or less, without busting, that rule would be called a "seven-card Charlie."
Blackjack is played with a conventional deck of 52 playing cards and suits don't matter. 2 through 10 count at face value, i.e. a 2 counts as two, a 9 counts as nine. Face cards (J,Q,K) count as 10.