[ns] what do they mean differently? make, make all, make clean, make depend

[Siyui AliOh]

i am not sure the difference between the comand of make, make all,
make clean, and make depend, can some one write me some about them? im
not expert in program in linux, allthough i have looked into the file
Makefile.in, i find the parameters of make are very complecated, and
so many macro definitions that puzzle me very much. any advice are
appreciated