make mrproper, etc

[Brett I. Holcomb]

What exactly do the following commands do.  I've seem them in the StepxStep and other guides but haven't seen an explanation of them.

make clean
make distclean
make mrproper
make dep
make clean bzImage
make modules (I assume this builds anything I've defined as being a module)
make modules_install (This installs the module in /lib/modules/* ???)

When I am rebuilding my kernel do I need make clean, make distclean, and make mrproper?

Thank you.