I wouldn't call these "Perl terms" to begin with. Perl programmers wouldn't generally use these words any differently than other developers.

A "suite" usually refers to a set of related programs.

A "library" is code which isn't meant to stand alone but which can be included in programs (or other libraries). Libaries usually provide a set of related functions for dealing with a particular kind of data.

A "distribution" refers to all the files included with the release of one version of a given software package.

-sauoq
"My two cents aren't worth a dime.";