Relationship between /usr/bin and /usr/lib
What is the relationship between these two directories? Do executables in bin call upon the libraries in lib?
More concretely, I'm trying to figure out where to put a precompiled tarball of FireFox. I plunked the whole folder down inside /usr/lib. $PATH, of course, doesn't look there. Am I supposed to mv the executable to /usr/bin and leave the rest where it is? What's the normal procedure for installations like this?