The police officers showed their warrant cards to gain entry into the building.

She has two green cards.

The referee showed two red cards to the players.

The race cards for tomorrow's horse racing event have been printed.

I use flash cards to study for my exams.

The houses of cards collapsed with a gentle breeze.

I have multiple credit cards.

She collected black cards from different countries.

I received many birthday cards from my friends.

I organized my notes using index cards.