hi Skippy,
in texas hold'em poker a hand contains 5 cards. for searching the best hand you put your 2 hole cards (your own cards) and the 5 community cards (in the middle) together (now you have 7 cards) and choose the best combination of 5 cards (after the hand ranking you can see in the left toolbox -> "hands"

. now you compare your 5 cards with the best 5 cards combination of all players on the table. at the end we highlight the winning 5 cards combination (the best hand of all players).
regards
floty