Benfica's Gianluca Prestianni was banned for six matches, three suspended, for homophobic comments aimed at Real Madrid's Vinicius Jr
Players at the World Cup could face a red card if they cover their mouths when speaking to opponents during confrontations.
The decision was taken during a special meeting of the Fifa Council in Vancouver, Canada, on Tuesday, where two Fifa-proposed law amendments were approved.
Players who leave the pitch in protest at a referee's decisions could also now face a red card, following ugly scenes at the Africa Cup of Nations final between Morocco and Senegal.
Both law changes have been approved as competition opt-ins by the International Football Association Board (Ifab).
