车祸 

Pinyin: chē huò 
Meaning：Traffic accident
Sentence: 车祸给了他一个教训，使他不再开快车。His car accident has been a lesson to him to stop driving too fast.

More: 

车： 

Pinyin: chē
Meaning: Machine; car; a vehicle; to shape with a lathe
Radical: 车
Stokes: 4
Traditional: 車
Common words/Phrase: 
车间 [chē jiān] 【workshop】
车票 [chē piào] 【ticket】
车站 [chē zhàn] 【station】
车库 [chē kù] 【garage】
车队 [chē duì] 【motorcade】

祸： 

Pinyin: huò 
Meaning: Disaster; calamity
Radical: 礻
Stokes: 11
Traditional: 禍
Common words/Phrase: 
祸害 [huò hài] 【disaster; harm】
祸国殃民 [huò guó yāng mín] 【To bring calamity to the country and people】
祸起萧墙 [huò qǐ xiāo qiáng] 【Trouble arises within the family】
祸不单行 [huò bù dān xíng] 【Misfortunes never come singly.】