What does mvn install in maven exactly do

Question

I just started using Maven and I was told to do mvn install in a specific directory.

What does mvn install do, exactly?

I think i

Answer 1

mvn install primary jobs are to 1)Download The Dependencies and 2)Build The Project

while job 1 is nowadays taken care by IDs like intellij (they download for any dependency at POM)

mvn install is majorly now used for job 2.