Block off & Break Down

Phrasal Verb Block Off

Meaning: To obstruct the passage of ~

•  The road was blocked off after the storm
•  The police blocked off access to the station because of a fire.

Phrasal Verb Break Down

Meaning: To malfunction / to stop working
Use: We use break down for cars and machines

• Jack’s car broke down on the highway.
• My coffee maker broke down, so I got a new one.