Poker where you build a hand from two hole cards and five community cards.
You pick the best five of seven cards, your own 2 hole cards plus the 5 board cards everyone shares, so you can use both hole cards, one, or none. The board comes out as 3 cards (the flop), 1 card (the turn), and 1 card (the river), with a betting round each time. Example. A♠ K♦ on a board of A♥ 7♣ 2♦ 9♠ 3♣ makes one pair of aces.