It is a warning
In soccer a yellow card is issued as a warning for committing a foul that is not so serious. A red card on the other hand is issued for serious offences or for someone who had received a yellow card earlier.
6cm by 12cm
No only yellow and red cards are there in soccer.
about the size of a playing card in a original deck.
No there are only red cards and yellow cards
what is the difference between a credit card, debit card and smart card
In soccer a yellow card is used for a minor foul. If you get two yellow cards in one game, you are given a red card. If a red card is given the player has to leave the game and a substitute has to enter the playing field.
when the (soccer) game is in play it is a yellow card.