n. something that happens without being planned and that is not expected
There are many car accidents in this area, so be careful when driving.

n. the performance of an actor
Lots of smoke came out of the chimney.

n. a person who takes something that belongs to another person or group without permission or authority to take it
One day, Ali Baba saw forty thieves.

v. to form a layer over something
Mom covered the food so flies won't touch them.

n. the force of policemen and officers
The Russian police told the press that the attack was racially motivated.

v. to speak or laugh noisily or unrestrainedly
I had to shout to my friend because he could not hear me.