I am using maven for the build purpose and normally we use the maven command mvn clean -Dmaven.test.skip=true package only to build the web application. I know we can use the mvn install command also to build a web application. But can anyone provide me with the exact difference between these two commands?

I found some notes on the clean and install commands. But i just want to know what's the advantage of using mvn clean command instead of using install command.